Fix re: and glob: patterns in .hgignore (reported by Brad Schick)
relglob: and relre: were already detected for a long time, so
I kept this undocumented functionality, especially as it was already
tested in test-hgignore.
To run the tests, do:cd tests/python run-tests.pySee http://www.selenic.com/mercurial/wiki/index.cgi/WritingTests formore information on writing tests.