revset: make default kind of pattern for "contains()" rooted at cwd Before this patch, default kind of pattern for revset predicate "contains()" is treated as the exact file path rooted at the root of the repository. This decreases usability, because: - all other predicates taking pattern argument (also "filelog()") treat such pattern as the path rooted at the current working directory - "contains()" doesn't describe this difference in its help - this difference may confuse users for example, this prevents revset aliases from sharing same argument between "contains()" and other predicates This patch makes default kind of pattern for revset predicate "contains()" be rooted at the current working directory. This patch uses "pathutil.canonpath()" instead of creating "match" object for efficiency.

revset: narrow scope of the variable referred only in specific code path This patch narrows scope of the variable "m" in the function for revset predicate "contains()", because it is referred only in "else" code path of "if not matchmod.patkind(pat)" examination.

tests: fix test-run-tests.py on OS X Do the same hack as in test-doctests.py to let the test pass on OS X.