commandopts and testcase search
Started the regression.py script to run the tests.  The following features
were added with minimal testing:
	finding of testcases
	recursive finding of testcases
	running of tests
	listing of tests to be run

Four dummy tests were also added for testing purposes.
The unix python script was added to set up the python path to include the
local pylib directory before the script is run (windows version still
pending).