[[ RefactorSyntax ]] Fix ctrl + key menu shortcuts
[[ Unicodify ]] Don't nativise in MCEngineSplitScriptIntoMessageAndParameters
[[ Unicodify ]] Make 7.0 file format the default
[[ Unicodify ]] Make MCStringsIterateWords unicode safe
Add some shortcuts in valueref conversion
Repair some holes in Unicode -> Windows codepage 1252 conversion
Merge remote-tracking branch 'upstream/refactor-syntax_unicode' into refactor-syntax_unicode