Allow tests that end in .py and .bat
Revision 6ed46bad9530 disallowed tests that have a '.' in the name, but
that also disallows tests that end in .py and .bat, even though run-tests.py
has some code to special case them.
3210 files updated, 0 files merged, 1 files removed, 0 files unresolvedsub/b not presentsub not present