Change CMAKE vars to better support build as a subproject'
Fix #include protection to use correct project name
Fix luncbox build dir which is compiled into apps
Update gitexternal to latest
Point gitextrnals to subproject branch
Point gitexternals to JB clone of CMake/common tools
Update GitExternal
Update GitExternal
Merge commit 'refs/pull/118/head' of https://github.com/Eyescale/Lunchbox

Conflicts:
	.gitexternals
	CMake/GitExternal.cmake