John Bauer db38f88c39 In ScreenEdit, figure out whether a song is dirty or not by keeping track
of a m_bDirty bit, not by reusing the m_bHasUndo bit.  This fixes two bugs:
1) Save & revert wouldn't clear the dirty bit before
2) Some operations such as tempo and stop changes wouldn't make
the song dirty

R=Steve Chekoway
2006-11-02 04:57:17 +00:00
S
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