#305 Support custom test prefixes in Unit tests and code coverage

[Nicholas Petrella]

Currently, the python Unit test and Python code coverage Run features only work with tests that begin with the name "test". It would be nice if this was modifiable. The python unit test framework allows for any prefix to be used and doing so allows developers to seperate different types of test. Doing the latter, though, makes it impossible to use the unit tests and code coverage features within pydev.