r=pedemont, sr=blizzard, a=asa OS/2 only - detect OS/2 mouse scroll git-svn-id: svn://10.0.0.236/trunk@116771 18797224-902f-48f8-a5cc-f745e15eee43
r=pedemont, sr=blizzard, a=asa OS/2 only - detect OS/2 mouse scroll git-svn-id: svn://10.0.0.236/trunk@116771 18797224-902f-48f8-a5cc-f745e15eee43