run_suite(): Factor this out of run_unittest() for tests that build their own test suite from a multitude of classes (like test_email.py will be doing).
run_suite(): Factor this out of run_unittest() for tests that build
their own test suite from a multitude of classes (like test_email.py
will be doing).

run_unittest(): Call run_suite() after making a suite from the
testclass.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator