Merge branch 'release-6.5.1' into bugfix-11559
[[ Bug 11559 ]] Make sure MCGFont is set to nothing if no text system.
[[ Bug 11559 ]] Remove unneeded dependence on freetype.
[[ Bug 11559 ]] Fix a couple of potential crash points if standalone engine is run with no embedded stack.
[[ Bug 11559 ]] Fixed another crash if no embedded stack present.