fixed moving drum events

git-svn-id: https://lmuse.svn.sourceforge.net/svnroot/lmuse/trunk@1725 21394207-e112-0410-bd00-e4265ec52c78
read old drummaps

git-svn-id: https://lmuse.svn.sourceforge.net/svnroot/lmuse/trunk@1726 21394207-e112-0410-bd00-e4265ec52c78