Added simplecrypt, but slightly modified to use 250000 rounds instead of 10000 from the standard module.
Added a module version string to check that the right one is imported.
Removed that string after brief test.
Removed python-gnupg and all dependence on GPG or any wrapper library.

Replaced with a slightly modified version of simplecrypt and PyCrypto.
The simplecrypt modification increases the number of rounds used from
10,000 to 250,000.

Thus neatly avoiding the impending disaster that is the python-gnupg
vs. gnupg thing.

Note to self: check the feasibility of blowing both packages out of
the water with a full port of gpme when gpg 2.1 is ready.
Updated to remove references to gpg reliance and added pycrypto dependancy.