[master] Finished merge of trac5150a (config-test command)

diff --cc ChangeLog
index e292089b3e595be072730c9d6840a625b8c4edff,efdcae8e651cda93110bc17b71d9e38d9194c2da..c9b6fdf0ec573ab7cf8e5c6010be071856ce8f3a
--- 1/ChangeLog
--- 2/ChangeLog
+++ b/ChangeLog
@@@ -1,16 -1,3 +1,22 @@@
++1229. [func]          fdupont
++      A new command: config-test has been implemented in DHCPv4, DHCPv6
++      and control agent servers. It allows checking whether new
++      configuration looks correct.
++      (Trac #5150, git xxx)
++
 +1228. [bug]           fdupont
 +      Logging on syslog now uses correctly the given facility. If none
 +      is given the default facility is local0, and with an unrecognized
 +      value user (log4cplus default). The syslog openlog() ident
 +      parameter is the program name.
 +      (Trac #5053, git 532d9f0e459ab1450a83a5015a2dd54745794383)
 +
 +1227. [func]          fdupont, tomek
 +      Additional commands: version-get, build-report have been
 +      implemented for DHCPv4, DHCPv6 and Control Agent
 +      components. Control Agent also now supports shutdown command.
 +      (Trac #102, git 9d2b8326fc032876d74c1768c61c630987c25cc5)
 +
  1226. [func]          fdupont
        Command line option -t support added to libprocess and implemented
        for kea-dhcp-ddns and kea-ctrl-agent. It allows configuration sanity

diff --cc src/lib/process/d_controller.cc
Simple merge