#6 Python 2.6 deprication warning

[A. Bram Neijt]

Not much, but something to keep in mide. If I could, I would mark this one as "enhancement" ;)

pyme.errors.GPGMEError/usr/lib/python2.6/dist-packages/pyme/errors.py:29: DeprecationWarning: BaseException.message has been deprecated as of Python 2.6
if self.message != None:
/usr/lib/python2.6/dist-packages/pyme/errors.py:30: DeprecationWarning: BaseException.message has been deprecated as of Python 2.6
message = "%s: %s" % (self.message, message)