Change #! lines to call "python" instead of "python2".

Pandora does not have a python2 symlink.  Distutils is supposed to
automatically convert those as needed, but I guess the OpenEmbedded build
system doesn't make that happen.
Removed associationitem functions from libpnd.py.

Skeezix tells me that these have been dropped from libpnd, so need
removing from my wrapper.
Version number bump for bugfix release