Update expected test output
It's no longer a "problem" to have the same name listed with no prefix
and a "hgext." prefix.
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.
convert: empty log messages are OK as of
7f5c3fb0a37d