Updated help strings and test-help: - options -I/-X: always at the end, don't include them in the synopsis. - NAME is optional for hg revert - other small changes.

\.orig$
\.rej$
~$
\.so$
\.pyc$
\.swp$
^build/
^dist/
^doc/.*\.[0-9]$
^MANIFEST$
^.pc/
^patches/
^mercurial/__version__.py$