It doesn't make sense that (a) is allowed whereas (b) is disallowed.
a) from mercurial import hg
from mercurial.i18n import _
b) from . import hg
from .i18n import _
Several known-bad files are excluded as they couldn't be trivially fixed.
In principle, we should fix them first, however, it would have more risk
to keep Py3k porting going without the test coverage.
Still contrib/**.py aren't covered, which needs another round.
This test is checking our source code to ensure style and correct behavior (eg:
no cycle). Current convention is that such tests starts with 'test-check-' so we
flock this on back with the others.
