#13 elimination of noise

[schoenborno]

Here is a patch to 0.8.13.tar.gz that allows modules that
are not files to be blacklisted, i.e. packages can be
blacklisted. A consequence is that matching on module
names is based on 'startswith': if blacklist
contains 'wxPython', any package, subpackage, module
or submodule that starts with 'wxPython' will be removed
from the warnings.

It would be relatively straighforward to eliminate
the 'startswith' feature but I have found it quite handy
so far.

The patch is attached.

[schoenborno]

The patch as obtained from diff -p