[#608] Fixed typos

[#608] Addressed review comments

src/lib/dhcpsrv/tests/csv_lease_file4_unittest.cc
    TEST_F(CSVLeaseFile4Test, embeddedEscapes)  - new test

src/lib/dhcpsrv/tests/csv_lease_file6_unittest.cc
    TEST_F(CSVLeaseFile6Test, embeddedEscapes) - new test

src/lib/util/csv_file.cc
    CSVRow::escapeCharacters() - now automatically also escapes
    first char of escape_tag to preserve input that happens to match
    escape tag

src/lib/util/tests/csv_file_unittest.cc
    TEST(CSVRowTest, escapeUnescape) - added embedded escape tests

plus misc clean up

[#608] Added unit test case

    modified:   csv_file_unittest.cc

[#608] Added ChangeLog entry

[#608] Memfile now tolerates commas in hostname and user-context columns

Commas in hostname and user-context columns are now escaped as
"&#x2c" when written out, and unescaped when read back in.

src/lib/util/csv_file.*
    CSVRow::escapeCharacters()
    CSVRow::unescapeCharacters()
    CSVRow::readAtEscaped()
    CSVRow::writeAtEscaped() - new functions
    CSVRow::parse() - replaced boost::split() faster, simplified parsing

src/lib/util/tests/csv_file_unittest.cc
    TEST(CSVRowTest, escapeUnescape) - new test
    updated other tests

src/lib/dhcpsrv/csv_lease_file4.cc
    CSVLeaseFile4 now uses CSVRow::writeAtEscaped() and CSVRow::readAtEscaped() for
    hostname and user-context columns

src/lib/dhcpsrv/csv_lease_file6.cc
    CSVLeaseFile6 now uses CSVRow::writeAtEscaped() and CSVRow::readAtEscaped() for
    hostname and user-context columns

src/lib/dhcpsrv/tests/csv_lease_file4_unittest.cc
    TEST_F(CSVLeaseFile4Test, embeddedCommas) - new test

src/lib/dhcpsrv/tests/csv_lease_file6_unittest.cc
    TEST_F(CSVLeaseFile6Test, embeddedCommas) - new test

[#1115] Fixed name collision

src/bin/dhcp4/ctrl_dhcp4_srv.*
src/bin/dhcp4/ctrl_dhcp6_srv.*
    renamed shutdown(exit_value) -> shutdownServer(exit_value)

[#1115] Addressed review comments

src/bin/agent/tests/ca_controller_unittests.cc
   TEST_F(CtrlAgentControllerTest, shutdown) - new test

src/lib/process/daemon.h
    Daemon::shutdown() restored to virtual

Other Minor cleanups

[#1115] Updated doc and added ChangeLog

modified:
    ChangeLog
    doc/sphinx/api/shutdown.json
    doc/sphinx/arm/ctrl-channel.rst

[#1115] shutdown command exit-value arg, exit w/failure on db loss

Added exit-value argument to shutdown command.
kea-dhcpX servers now exit with EXIT_FAILURE status on db loss

src/lib/process/daemon.*
    Daemon::exit_value_,  new member with getter/setter

src/lib/process/d_controller.*
    DControllerBase::launch() - now returns getExitValue()
    DControllerBase::shutdownHandler() - uses exit-value argument to set exit
    value

src/lib/process/tests/daemon_unittest.cc
    TEST_F(DaemonTest, exitValue)  - new test

src/bin/agent/main.cc
    Use launch() return value for exit value.

src/bin/agent/tests/ca_controller_unittests.cc
    TEST_F(CtrlAgentControllerTest, shutdownExitValue)  - new test

src/bin/d2/main.cc
    Use launch() return value for exit value.

src/bin/d2/tests/d2_command_unittest.cc
    TEST_F(CtrlChannelD2Test, shutdownExitValue)  - new test

src/bin/dhcp4/ctrl_dhcp4_srv.*
    ControlledDhcpv4Srv::
        commandShutdownHandler() - handle exit-value argument
        shutdown(int exit_value) - added exit_value parameter
        dbReconnect() - call shutdown(EXIT_FAILURE)
        dbLostCallback() - call shutdown(EXIT_FAILURE)

src/bin/dhcp4/dhcp4_srv.*
    Dhcp4Srv::run() - returns int Daemon::exit_value instead of bool

src/bin/dhcp4/main.cc
    Use run() return value for exit value.

src/bin/dhcp4/tests/ctrl_dhcp4_srv_unittest.cc
    TEST_F(CtrlChannelDhcpv4SrvTest, commands) - revamped test

src/bin/dhcp6/ctrl_dhcp6_srv.*
    ControlledDhcpv6Srv::
        commandShutdownHandler() - use exit-value argument to set exit value
        shutdown(int exit_value) - added exit_value parameter
        dbReconnect() - call shutdown(EXIT_FAILURE)
        dbLostCallback() - call shutdown(EXIT_FAILURE)

src/bin/dhcp6/dhcp6_srv.*
    Dhcp6Srv::run() - returns int Daemon::exit_value instead of bool

src/bin/dhcp6/main.cc
    Use run() return value for exit value.

src/bin/dhcp6/tests/ctrl_dhcp6_srv_unittest.cc
    TEST_F(CtrlDhcpv6SrvTest, commands) - revamped test

[#1088] updated ChangeLog

[#1088] addressed review

[#1088] addressed review

[#1088] addressed review

[#1088] addressed review

[#1088] addressed review

[#1088] fixed compilation

[#1088] handle pack/unpack for bootp and ha

[#1088] fixed comments

[#1088] check callout status before processing

[#1103] Ensure fuzz.dox is included in tarball

This developer documentation was inadvertently omitted from the
distribution tarball.

[#1103] Remove sample fuzz packets

Remove these as fuzz testing is not something that most people will do
and they are not used in ISC fuzz testing (a more extensive set of seeds
is used).  In addition, it is easy enough to generate sample packets for
the fuzzer (something that is described in the developer documentation).
Indeed, with AFL, any file (not necessarily a DHCP packet) can be used
as a seed and useful results obtained.

[#1128] version bump up

[#1128] lib versions changed

[#1128] lib versions changed

[#1128] 1.7.4 pre prelease changes

[#160] Addressed revie comments

 - care => caution
 - ip6tables => iptables

[#160] Running non-rooted kea described

[#1049] Minor classification doc update

[#947] updated ChangeLog

[#947] added ChangeLog

[#947] added ChangeLog

[#947] added ChangeLog

[#892] Fixed shellcheck in gitlab-ci

[#892] added ChangeLog

[#892] addressed review comments

[#892] addressed review comments

[#892] addressed review comments

[#892] fixed compilation

[#892] refactored

[#892] refactored

[#892] minor changes

[#892] refactored

[#892] fixed command line parameters

[#892] fixed compilation

[#892] handle parking

[#892] minor changes

[#892] create pkt thread pool and handle processing using multiple threads

[#1048] Addressed review comments

    Corrected typo in commentary.

[#1048] Added ChangeLog entry

[#1048] Fixed new doc formatting

[#1048] Enable host sanitizing by default

src/lib/util/strutil.cc
    StringSanitizerImpl::scrub() - modified non-USE_REGEX code to
    handle embedded nuls.

src/lib/util/tests/strutil_unittest.cc
    Updated tests

src/bin/dhcp4/tests/fqdn_unittest.cc
src/bin/dhcp4/tests/get_config_unittest.cc
src/bin/dhcp6/tests/fqdn_unittest.cc
src/bin/dhcp6/tests/get_config_unittest.cc
    updated testing

src/lib/dhcpsrv/parsers/simple_parser4.cc
src/lib/dhcpsrv/parsers/simple_parser6.cc
    Added global default values

doc/sphinx/arm/dhcp6-srv.rst
doc/sphinx/arm/dhcp4-srv.rst
    Updated sanitizing text

[#1071] Changelog updated

[#1071] Fix for danger running on wrong runner

[#1071] refactored

[#1071] fixed compilation for mysql 8.x

[#1071] static assert if sizeof(bool) is not 1

[#1071] Leftover #endif removed

[#1071] always cast to target type

[#1021] fixed doxygen

[#1021] fixed doxygen

[#1021] fixed doxygen

[#1021] fixed doxygen

[#1021] changed option parameter

[#1021] fixed compilation

[#1021] rebased and addressed review

[#1021] removed mutex

[#1021] added stats, extended tests, mutex

[#1021] deque changed to set, mutex added

[#1021] unit tests for unique address

[#1021] [1021] added address uniqueness checks

[#947] addressed review

[#947] addressed review

[#947] addressed review

[#947] addressed review

[#947] addressed review

[#947] addressed review

[947-mt-compatibility-for-hooks] Updated stat cmds

[947-mt-compatibility-for-hooks] Did a first pass on core hooks

[947-mt-compatibility-for-hooks] Checkpoint: hook library done, hooks to do

[947-mt-compatibility-for-hooks] Checkpoint: waiting for MTCS #970 stuff

[947-mt-compatibility-for-hooks] checkpoint

[#1121] Addressed review comment

    Minor cleanup

[#1121] Remove inefficient comparator wrapper methods from IOAddress

src/lib/asiolink/io_address.h
    IOAddress::lessThan()
    IOAddress::smallerEqual() - removed these altogether
    IOAddress operators now simply use boost::ip_address operators

src/lib/dhcpsrv/pool.cc
    Pool::inRange() - replace use of IOAddress::smallerEqual() with
    direct <= expresssion.

[#1090] ChangeLog updated

[#1090] empty line removed

[#1090] pkt4_send drop status now actually drops packet

[#1090] pkt4-send comment updated

[#957] updated ChangeLog

[#957] addressed review

[#957] addressed review

[#957] addressed review

[#957] removed getLibraryHandle from CalloutHandle

[#957] refactored hooks manager classes to be unsed in multi-threading

[#1108] Servers execute shutdown on unrecoverable DBs

Added ChangeLog entry

src/bin/dhcp4/ctrl_dhcp4_srv.*
    ControlledDhcpv4Srv::dbLostCallback() - schedules a shutdown
    once retries have been exhausted/disableld

src/bin/dhcp6/ctrl_dhcp6_srv.*
    ControlledDhcpv6Srv::dbLostCallback() - schedules a shutdown
    once retries have been exhausted/disableld

src/lib/database/database_connection.h
    class DbUnrecoverableError - new exception

src/lib/mysql/mysql_connection.h
    MySqlConnection::check_error() - throws DbUnrecoverableError
    instead of calling exit()

src/lib/pgsql/pgsql_connection.*
    PgSqlConnection::checkStatementError() - throws DbUnrecoverableError
    instead of calling exit()

[#1074] updated ChangeLog

[#1074] minor changes

[#1074] minor changes

[#1074] minor changes

[#1074] minor changes

[#1074] minor changes