[mod_python] Announce: 2.7.7

I have released mod_python 2.7.7.

This release (as far as I could tell adequately) addresses the security
issue whereby a module indirectly imported by a published module could
then be accessed via the publisher.

It is highly recommended that you upgrade, especially if you use the
publisher.

A quick way to upgrade is to just replace the apache.py file and restart
httpd - everything else is pretty much the same except for the verion
number. Windows users should still be able to use the 2.7.6 DLL with the
new apache.py.

Grisha