python-notify: Fix build.

There is no new upstream version available and the latest upstream release is
still using calls to prehistoric versions of libnotify. Most other distro have
patched this already, so no need to patch again. Patch is from Fedora (which is
the most referenced source seen so far).

Additionally the configure script cannot find the correct path to the codegen
executable, so we're patching it accordingly as well.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>