Fix for dSYM removal code:
Fix for dSYM removal code:

The newest greatest and finest py2app from SVN has two bugs for which I'm supplying a patch:
* it uses shutils, which it does not import
* the dSYM removal function really does delete given files, but the list of files to strip isn't updated, which fails on trying to strip an non-existing file


Patch by 	Cezary Krzyżanowski

metachris/py2app,metachris/py2app,metachris/py2app,metachris/py2app