BIND 10 #1246: socketcreator breaks "FROM_SOURCE" environment

[BIND 10 Development]

#1246: socketcreator breaks "FROM_SOURCE" environment
-------------------------------------+-------------------------------------
            Reporter:  jinmei        |                        Owner:
                Type:  defect        |                       Status:  new
            Priority:  major         |                    Milestone:  Next-
           Component:  Boss of BIND  |  Sprint-Proposed
           Sensitive:  0             |                     Keywords:
         Sub-Project:  Core          |              Defect Severity:  High
Estimated Difficulty:  0             |  Feature Depending on Ticket:
         Total Hours:  0             |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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 socketcreator.Creator() prepends @@LIBEXECDIR@@ to the environment
 variable PATH unconditionally:
 {{{
         self.sockcreator =
 isc.bind10.sockcreator.Creator("@@LIBEXECDIR@@:" +
 os.environ['PATH'])
 }}}

 It breaks the "FROM_SOURCE" environment because once the socket
 creator is invoked installed programs will be spawned instead of the
 in-source versions.  It specifically breaks run_bind10.sh and system
 tests.  Especially for the latter this should be fixed ASAP.

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Ticket URL: <http://bind10.isc.org/ticket/1246>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development