[#260,!120] Further changes in watched_thread tests to avoid races.

[#260,!120] Minor fixes as a result of review.

[#260,!120] Addressed more review comments

    Removed RCV_ prefix from WatchedThread::WatchtType members
    Scrubbed WatchedThread source for lingering packet/receiver comments
    Adjusted test wait times

[#260,!120] As it didn't compile for me, I fixed dependencies in Makefile.am

[#260,!120] Addressed more review comments

doc/guide/congestion-handling.xml
    Added subsections to Congestion Handling chapter

src/lib/dhcp/iface_mgr.*
    Removed Receiver class, replaced with new class lib::util::thread::WatchedThread
    Renamed IfaceMgr::receiver_ to dhcp_receiver
    Renamed add_fd to addFDtoSet

src/lib/dhcp/packet_queue_mgr.h
    PacketQueueMgr::unregisterFactory() - destroys queue instance
    if it matches type being unregistered

New files:
src/lib/util/threads/
    watched_thread.h
    watched_thread.cc

src/lib/util/threads/tests
    watched_thread_unittest.cc

[#260, !120] Fixed typo in the User's guide.

[#260, !120] PacketQueueMgr4/6 are no longer singletons

    dhcp::IfaceMgr simply owns instances of the packet queue
    managers, rather than them being singletons.

[#260,!120] Moved thread creation from Receiver ctor to new start function

    dhcp::Receiver - moved creating receiver's thread out of the constructor
    to new Receier::start() method.  This alleviates issues with thread worker
    functions referring to Receiver members before Receiver fully exists.

[#260,!120] Removed Mutexing from IfaceMgr, PacketQueue must now be thread-safe

    Removed Mutexing from IfaceMgr, added it to default kea packet queue
    implementations.  PacketQueue derivations are required to be thread-safe,
    thus leaving upto implementers to choose how.

[#260,!120] Extracted IfaceMgr thread bits into new class, isc::dhcp::Receiver

src/lib/dhcp/iface_mgr.*
    Extracted the thread, watch sockets, mutex, and error message members
    from IfaceMgr and wrapped them in a new class, isc:dhcp::Receiver.

    IfaceMgr::add_fd(int fd, int& maxfd, fd_set* sockets) - new
    convenience method for adding descriptors to fd_set(s)

src/lib/dhcp/tests/iface_mgr_unittest.cc
    class ReceiverTest - new test fixture
    TEST_F(ReceiverTest, receiverClassBasics)  - new unit test

[#260,!120] Addressed most of review comments

    Addressed all comments except parsing regen and
    refactor of watch sockets in IfaceMgr.  Doing those
    separately.

[#260,!120] Replaced hard-coded default queue type names

[#260,!120] Added Congestion Handling chapter to admin guide

Added a new chapter on Congestion Handling rather than independent
sections for kea-dhcp4 and 6.

modified:   doc/guide/Makefile.am
modified:   doc/guide/kea-guide.xml
new file:   doc/guide/congestion-handling.xml

[#260,!120] Added dhcp-queue-control parser defaults

    Added dhcp-queue-control defaults to SimpleParser<4/6>
    Revamped server config unit tests

[#260, !120] Beefed up IfaceMgr unit tests

src/lib/dhcp/iface_mgr.*
    IfaceMgr::isReceiverRunning() - new, public convenience method

src/lib/dhcp/tests/iface_mgr_unittest.cc
    Revamped sendReceive<4/6> tests to test both direct and
    indirect packet reception

    TEST_F(IfaceMgrTest, configureDHCPPacketQueueTest4)
    TEST_F(IfaceMgrTest, configureDHCPPacketQueueTest6) - new tests

[#260,!120] Packet queueing is now optional

src/bin/dhcp<4/6>/ctrl_dhcp<4/6>_srv.cc
    ControlledDhcpv<4/6>Srv::processConfig() - now calls
        IfaceMgr::configureDHCPPacketQueue

src/bin/dhcp<4/6>/dhcp<4/6>_parser.yy
    dhpc-queue-control parsing updated to enforce
    enable-queue/queue-type rules

src/bin/dhcp<4/6>/tests/config_parser_unittest.cc
    TEST_F(Dhcp<4/6>ParserTest, dhcpQueueControl)
    TEST_F(Dhcp<4/6>ParserTest, dhcpQueueControlInvalid)

src/lib/dhcp/iface_mgr.*
    IfaceMgr
    - closeSockets()  - now calls stopDHCPReceiver

    - openSockets<4/6>() -  now calls startDHCPReceiver

    - receive<4/6>Indirect() - new function which monitors receiver
    thread watch sockets, reads DHCP packets from queue

    - receive<4/6>Direct() - new function which monitors and reads DHCP
    packets from interface sockets directly

    - receive<4/6>() - rewritten to call receive<4/6>Indirect
    if receiver thread is running, otherwise it calls receive<4/6>Direct

    - configureDHCPPacketQueue() - new function which either enables queuing
    by creating a new packet queue, or disables it by destroying the
    existing queue

src/lib/dhcp/packet_queue_mgr.h
    PacketQueue::destroyPacketQueue() - new function

src/lib/dhcp/packet_queue_mgr<4/6>.cc
    PacketQueueMgr<4/6>::PacketQueueMgr<4/6>() - no longer creates a
    default packet queue

src/lib/dhcpsrv/cfg_iface.cc
    CfgIface::closeSockets() - removed call to stopDHCPReceiver
    CfgIface::openSockets() - removed call to startDHCPReceiver

src/lib/dhcpsrv/parsers/dhcp_queue_control_parser.*
    DHCPQueueControlParser
    - removed unused family_ member
    - parse() - added support for enable-queue

src/lib/dhcpsrv/tests/dhcp_queue_control_parser_unittest.cc
    - new file

[#260,!20] Packet queueing is now optional

src/bin/dhcp<4/6>/ctrl_dhcp<4/6>_srv.cc
    ControlledDhcpv<4/6>Srv::processConfig() - now calls
        IfaceMgr::configureDHCPPacketQueue

src/bin/dhcp<4/6>/dhcp<4/6>_parser.yy
    dhpc-queue-control parsing updated to enforce
    enable-queue/queue-type rules

src/bin/dhcp<4/6>/tests/config_parser_unittest.cc
    TEST_F(Dhcp<4/6>ParserTest, dhcpQueueControl)
    TEST_F(Dhcp<4/6>ParserTest, dhcpQueueControlInvalid)

src/lib/dhcp/iface_mgr.*
    IfaceMgr
    - closeSockets()  - now calls stopDHCPReceiver

    - openSockets<4/6>() -  now calls startDHCPReceiver

    - receive<4/6>Indirect() - new function which monitors receiver
    thread watch sockets, reads DHCP packets from queue

    - receive<4/6>Direct() - new function which monitors and reads DHCP
    packets from interface sockets directly

    - receive<4/6>() - rewritten to call receive<4/6>Indirect
    if receiver thread is running, otherwise it calls receive<4/6>Direct

    - configureDHCPPacketQueue() - new function which either enables queuing
    by creating a new packet queue, or disables it by destroying the
    existing queue

src/lib/dhcp/packet_queue_mgr.h
    PacketQueue::destroyPacketQueue() - new function

src/lib/dhcp/packet_queue_mgr<4/6>.cc
    PacketQueueMgr<4/6>::PacketQueueMgr<4/6>() - no longer creates a
    default packet queue

src/lib/dhcpsrv/cfg_iface.cc
    CfgIface::closeSockets() - removed call to stopDHCPReceiver
    CfgIface::openSockets() - removed call to startDHCPReceiver

src/lib/dhcpsrv/parsers/dhcp_queue_control_parser.*
    DHCPQueueControlParser
    - removed unused family_ member
    - parse() - added support for enable-queue

src/lib/dhcpsrv/tests/dhcp_queue_control_parser_unittest.cc
    - new file

[master] Updated git hash

[268-reservation-mode-is-not-global] Updated ChangeLog

[268-reservation-mode-is-not-global] Patching get_config_unittest.cc to remove always-include-fqdn left by rebase

[268-reservation-mode-is-not-global] Minor editorial updates in User's Guide.

[268-reservation-mode-is-not-global] Added where reservation-mode parameter can be specified

[#268,!125] Regen flex/bison

[268-reservation-mode-is-not-global] Updated doc and config tests

[268-reservation-mode-is-not-global] Updated code for global reservation mode

[master] Added ChangeLog entry about keatest-module.yang cleanup

[65-libyang-clean-keatext] Reduced model and adapted tests

[master] Added ChangeLog entry for always-include-fqdn removal

[#182, !128] Regen flex/bison

[182-remove-always-include-fqdn-configuration-parameter-from-d2clientconfig] Finished to remove always-include-fqdn

[#182, !128] Regen flex/bison

[182-remove-always-include-fqdn-configuration-parameter-from-d2clientconfig] Removed always-include-fqdn

Update kea-dhcp6.xml

Update kea-dhcp4.xml

Update kea-guide.xml

updated link to kea documentation

Update link to Kea Admin reference guide

 updated link to kea documentation

Update references to docs on oldkea.isc.org

Update links to kea guides

Update link to ddns design doc in gitlab wiki

[master] Updated ChangeLog for #176, !107

[176-update-to-sysrepo-0-7-6-release] typo

[176-update-to-sysrepo-0-7-6-release] Changet HAVE_OLD_SYSREPO into HAVE_PRE_0_7_6_SYSREPO

[176-update-to-sysrepo-0-7-6-release] Added sysrepo 0.7.6 support

[master] Fixed with-sysrepo help (#146)

[#270, !129] regen bison with 3.2.1

[master] Fixed v4 -> v6 typo (cdf #262)

Update logging.dox

Update cc.dox

Update stat_cmds.dox

Update lease_cmds.dox

Update kea-shell.xml

Update kea-netconf.xml

Update kea-lfc.xml

Update keactrl.xml

Update keactrl.xml

Update kea-dhcp6.conf.pre

Update kea-dhcp4.conf.pre

Update kea-dhcp4.conf.pre

Update kea-dhcp-ddns.conf.pre

Update kea-ctrl-agent.conf.pre

Update kea-dhcp-ddns.conf.pre

Update kea-ctrl-agent.conf.pre

Update kea-dhcp6.xml

Update dhcp6.dox

Update kea-dhcp4.xml

Update kea-dhcp-ddns.xml

Update dhcp6-srv.xml to remove references to oldkea.isc.org

Update dhcp4-srv.xml to remove oldkea.isc.org references

Update kea-ctrl-agent.xml

Update quickstart.xml to remove references to oldkea.isc.org

Update install.xml to remove references to oldkea.isc.org

Update dhcp6-srv.xml

Update dhcp4-srv.xml

Update ddns.xml

Merge branch 'master' of https://gitlab.isc.org/isc-projects/kea

[master] fixes in commands api documentation

[master] version update after release

Update classify.xml

Update unit-tests.dox

Update bison.dox

Update README

Update INSTALL

[master] Regen bison 3.0.5 (>= 3.1 bugged)

[master] Regen bison with 3.2.1 (last) version

[master] Added ChangeLog for #57,122.

[#57,!122] Explicitly initialize JSON feed members.

[#57,!122] Improve HTTP body parsing performance.

[#57,!122] First attempt to improve performance of JSONFeed.

[master] Added missing space in comment

[#43,!123] Implemented parseCommandWithArgs function.

Update unit-tests.dox to replace reference to oldkea.isc.org

@section unitTestsIntroduction Introduction

Kea uses the Google C++ Testing Framework (also called googletest or gtest) as a
base for our C++ unit-tests. See https://github.com/google/googletest for
details. We used to have Python unit-tests inherited from BIND10
days but have been removed, so please do not write any new Kea unit
tests in Python. If you want to write DHCP tests in Python, we encourage you to
take a look at ISC Forge: http://oldkea.isc.org/wiki/IscForge .

You must have \c gtest installed or at least extracted in a directory
before compiling Kea unit-tests.  To enable unit-tests in Kea, use:

@code
./configure --with-gtest=/path/to/your/gtest/dir
@endcode

or

@code
./configure --with-gtest-source=/path/to/your/gtest/dir

Update mainpage.dox to remove link to oldkea.isc.org

Update hooks.xml to replace links to oldkea. also updated references to 1.4 to 1.5

Update mainpage.dox to replace a reference to oldkea.isc.org

Fixed some references to oldkea.isc.org

Update link to oldkea wiki

[master] all links kea.isc.org were temporary changed to oldkea.isc.org for upcoming release

[master] *.mes file reorder