- fix MesonBuildConfiguration to use startBuildProcess instead
of CommandLauncherManager
- change CBuildConfiguration startBuildProcess() method to accept
a build directory and to replace environment variables based
on input parameter
- fix CBuildConfiguration watchProcess routines to ensure that the
ReaderThreads have completed processing output to the console
- change StandardBuildConfiguration and CMakeBuildConfiguration to
pass the working directory to startBuildProcess
Change-Id: Icb4f2d076f0e6bb1513b20f6f198f720eae07e51