check-seclevel: add a --debug option This will make it possible to get semi-meaningful tracebacks if an import error occurs. Why care? Trying to run this script under pypy currently fails, but the true error is obscured.

test-run-tests: glob away a --debug run difference on Windows This internal test is piped through 'grep -v pwd' to eliminate the pwd alias set when running with MSYS. Unfortunately, the '.' from the successful run of the prior internal test precedes the pwd alias for the next test on the same line, so grep filters out '.' too, except for the final test. It also looks like there may be a bug with --debug: the output of the internal test that had this diff says 2 ran, 0 failed (one test being test-failure.t), but if --debug is omitted from the internal test, then it says 2 ran, 1 failed. With this longstanding issue fixed, the test suite finally runs cleanly on Windows (except subrepo merge documented in issue 4988), with 88 skips. \o/

import-checker: force 'ctype.util' to stdlib module Not having this caused warnings on Windows: mercurial/pure/osutil.py:12: stdlib import follows local import: os mercurial/pure/osutil.py:13: stdlib import follows local import: socket mercurial/pure/osutil.py:14: stdlib import follows local import: stat mercurial/pure/osutil.py:15: stdlib import follows local import: sys

keepalive: use absolute_import