tests: count revisions explicitly The assumption that len(repo) corresponds to the count of actual, usable revision in the repository fails in presence of hidden revisions. Instead, we use a dedicated method in test_util, and change all tests to use this for obtaining repository length -- just to be safe...

include Makefile hgsubversion/help/*.rst tests/fixtures/invalid_utf8.tar.gz
recursive-include tests *.py *.sh *.svndump *.txt