EMI: Make sure the music state id does not exceed the number of entries in the music table.
EMI: Implement ImPause and ImResume.
EMI: Accept .lab suffix when detecting MP3 music.
EMI: Initialize _looping in SCXTrack.
GRIM: Fix a crash when the debugger comes up before g_movie has been initialized
Merge pull request #1003 from Akz-/emi-sounds-rebase

EMI: Fix demo crashes