Add -E as shortcut for --exclude-pattern

[mpenning]

'-E' is a time-saver to avoid '--exclude-pattern' spam if you need to exclude matching on a lot of character patterns

[mpenning]

Can you add a sanity test to test_pssmain.py?

I just did... I expanded one of the existing test methods... please see commit d380e2e

[eliben]

Please fix the failing tests