[#42] Replaced use of QueueControl with ElementPtr

deleted:
    src/lib/dhcp/queue_control.cc
src/lib/dhcp/queue_control.h
src/lib/dhcp/tests/queue_control_unittest.cc

Updates is mulitple files

[master] Added ChangeLog entry for #78,!85.

[#78,!85] Addressed review comments.

[#78,!85] max-period in dhcp-disable set to sync-timeout HA parameter.

[#78,!85] Updated HA/timeouts section in the User's Guide.

[#78,!85] Send dhcp-disable every time we ask for a page of leases.

[#78,!85] Tagged lease_cmds Guide section with id.

[#78,!85] Added section to the User Guide about sync-page-limit parameter.

[#78,!85] Sync page limit is now configurable.

[#78,!85] Corrected unit test name.

[#78,!85] Use leaseX-get-page command instead of leaseX-get-all in HA sync.

[#78,!85] HA command creator supports leaseX-get-page commands.

[master] Added ChangeLog entry for #64,!41.

[#64,!41] Minor updates to the class_cmds reference.

[#64,!41] Updated class_cmds docs per review comments.

[#64,!41] Docs updated.

[64-client-class-cmds-hook] Added class_cmds hooks library to the list in guide.

[64-client-class-cmds-hook] Added kea-docgen into the .gitignore.

[64-client-class-cmds-hook] Documented class_cmds in API docs.

[64-client-class-cmds-hook] Documented class_cmds in the User's Guide.

[64-client-class-cmds-hook] Better description of dependent_class parameter.

This is in the ClientClassDef::dependOnClass. Review comment.

[64-client-class-cmds-hook] Control whether class def parser appends position.

[5685] Removed unused unit test

[5685] Added dependency methods and tests

[5685] Checkpoint: list -> vector

[#42] Implemented PacketQueueMgr class

New files:
    src/lib/dhcp/packet_queue_mgr.h
    src/lib/dhcp/packet_queue_mgr4.cc
    src/lib/dhcp/packet_queue_mgr4.h
    src/lib/dhcp/packet_queue_mgr6.cc
    src/lib/dhcp/packet_queue_mgr6.h
    src/lib/dhcp/tests/packet_queue_mgr4_unittest.cc
    src/lib/dhcp/tests/packet_queue_mgr6_unittest.cc
    src/lib/dhcp/tests/packet_queue_testutils.h

src/bin/dhcp4/ctrl_dhcp4_srv.cc
    Cleaned up packet queue config block

src/bin/dhcp4/dhcp4_lexer.ll
src/bin/dhcp4/dhcp4_parser.yy
src/bin/dhcp4/tests/config_parser_unittest.cc
    added queue-type

src/bin/dhcp4/dhcp4_messages.mes
    added DHCP4_CONFIG_PACKET_QUEUE message

src/lib/dhcp/Makefile.am
    packet_queue_mgr.h
    packet_queue_mgr4.cc packet_queue_mgr4.h
    packet_queue_mgr6.cc packet_queue_mgr6.h

src/lib/dhcp/iface_mgr.*
    Replaced packet queue members with PQM members
    Added PQM instantion to IfaceMgr ctor

src/lib/dhcp/packet_queue.h
    added getInfo,getInfoStr

src/lib/dhcp/tests/Makefile.am
    packet_queue_mgr4_unittest.cc
    packet_queue_mgr6_unittest.cc

src/lib/dhcpsrv/parsers/queue_control_parser.cc
    added queue-type

Update Makefile.am to add libkea-database.la

[#202, !111] Corrected the ChangeLog numbering

[#202, !111] EXTRA_DIST corrected in doc/docgen/Makefile.am

[#202, !111] ChangeLog updated.

[#202, !111] make distcheck fix

Changes proposed by Wlodek Wencel
Signed-off-by: Tomek Mrugalski <tomasz@isc.org>

[master] Fixed conflict in ChangeLog

[#180,!93] ChangeLog updated

[#180,!93] Last doxygen warning addressed.

[#180,!93] More doxygen warnings fixed.

[180-address-some-doxygen-warnings-errors] Saved tentative fixes

[master] Updated git hash

[29-cryptolink-random-generator] Updated random users

[29-cryptolink-random-generator] Added RNG support

[#42, !103] Interrim commit, kea-dhcp4 supports "queue-control"

    kea-dhcp4 will parse and use "queue-control" to configure ring
    buffer size:

    "Dhcp4":
    {
        "queue-control": {
            # max number of packets the ring will hold
            "capacity" : 100
        },
    :

    This is an interrim commit for testing purposes.
    Expect a fair amount of refactoring in subsequent commits.

New files:
src/lib/dhcp/queue_control.cc
src/lib/dhcp/queue_control.h
src/lib/dhcp/tests/queue_control_unittest.cc
src/lib/dhcpsrv/parsers/queue_control_parser.cc
src/lib/dhcpsrv/parsers/queue_control_parser.h

src/bin/dhcp4/ctrl_dhcp4_srv.cc
    ControlledDhcpv4Srv::processConfig() -
        added logic to set packet queue controller

src/bin/dhcp4/dhcp4_lexer.ll b/src/bin/dhcp4/dhcp4_lexer.ll
src/bin/dhcp4/dhcp4_parser.yy
src/bin/dhcp4/parser_context.*
    Added queue-control parsing

src/bin/dhcp4/json_config_parser.cc
    configureDhcp4Server() - recognize and parse "queue-control"

src/bin/dhcp4/tests/config_parser_unittest.cc
    TEST_F(Dhcp4ParserTest, queueControl)
    TEST_F(Dhcp4ParserTest, queueControlInvalid)
    - new tests

src/lib/dhcp/iface_mgr.*
    IfaceMgr::getPacketQueueControl4()
    IfaceMgr::setPacketQueueControl4()
    IfaceMgr::getPacketQueueControl6()
    IfaceMgr::setPacketQueueControl6()

src/lib/dhcp/packet_queue.*
    Use QueueControl class

src/lib/dhcpsrv/srv_config.*
    Added QueueControl member, getter/setter
    SrvConfig::toElement() - now emits queue-control if not null

[master] Added ChangeLog for #194.

[#194,!104] Removed libkea-process dependency on MySQL, Postgres and CQL.

[master] Added ChangeLog for #93,!105.

[#93,!105] Exclude mysql_cb hooks library from Kea 1.5.0 dist.

[master] Added ChangeLog entry 1463.

[master] DHCPv6 now recognizes global HR mode

    Merge branch '129-global-reservation-mode-is-dhcpv4-only'

[153-netconf-agent] Addressed final comments

[153-netconf-agent] Addressed more comments

[153-netconf-agent] Reviewed changes and addressed last week comments

[#153,!82] Changes after review:

 - removed #if 0
 - cleaned up messages

[#153,!82] Changes after review:

 - logging messages updated
 - existing simple-dhcp4.json tweaked, commented
 - added new simple4.xml example

[153-netconf-agent] Revamp the init thread

[153-netconf-agent] Fixed closure

[153-netconf-agent] Make netconf more robust

[153-netconf-agent] Moved agent test to threaded

[153-netconf-agent] Updates (include !94)

[153-netconf-agent] final fix from tests

[153-netconf-agent] Imported fixes

[153-netconf-agent] Added netconf agent code from kea-yang

[master] ChangeLog updated after #10,!3 merge.

[#10,!3] Section about generating documentation added.

[#10,!3] api.xml regenerated

[#10,!3] Copyright years are now autogenerated.

[#10,!3] Tiny corrections in 3 API commands.

[#10,!3] Corrected typo in the Makefile.am.

Update leases-reclaim.json

Update lease6-wipe.json

Regenerated api.xml

Fixed cache-remove.json, config-get.json

Update subnet4-add.json

Update subnet4-del.json

Update subnet4-get.json

Update subnet4-list.json

Update subnet6-add.json

Update subnet6-del.json

Update subnet6-get.json

Update subnet6-list.json

Update stat-lease6-get.json

Update stat-lease4-get.json

Update network6-subnet-del.json

Update network6-subnet-add.json

Update network6-list.json

Update network6-get.json

Update network6-del.json

Update network6-add.json

Update network4-subnet-del.json

Update network4-subnet-add.json

Update network4-list.json

Update network4-get.json

Update network4-del.json

Update network4-add.json

Update lease6-update.json

Update leases-reclaim.json

Update lease6-get.json

Update lease6-get-all.json

Update lease4-add.json

Update lease6-del.json

Update lease6-add.json

Update lease4-wipe.json

Update lease4-update.json