Fixes unworking sys keys in Windows and compilation issue
[[ Bug 12195 ]] Fix typo with MCConcat parsing
Merge pull request #907 from runrevali/bugfix-12195

[[ Bug 12195 ]] Fix typo with MCConcat parsing
Merge branch 'refactor-syntax_unicode' into refactor-syntax_unicode_externals
[[ ExternalsV6 ]] Added engine-mobile reference in revtestexternals-modile.xcode