Removed a couple of unnecessary MCValueReleases (since MCArrayFetchValueAtIndex is a 'get' not a 'copy').
Merge branch 'refactor-syntax_unicode' into refactor-syntax_unicode_mac
Merge remote-tracking branch 'origin/refactor-syntax_unicode_mac' into refactor-syntax_unicode_mac
MCSerialPortFileHandle added for Mac - Read and Write might need to be updated though - see #if 0'd alternate implementation
MCstacknames error on Livecode IDE closing fixed, as well as a memory leak.