Escape dir separators in mingw/msys profile script so shell is happy again.
Escape dir separators in mingw/msys profile script so shell is happy again.

git-svn-id: 38cedb3a26441909d4c4a02637a61d2c70533dbc@16952 55e972cd-5a19-0410-ae62-a4d7a52db4cd

secureteam13/torvm