keyword: fix mq repository detection under Windows

Do not abort rollback if undo.branch isn't available, but warn.

Remove trailing ! from two error messages as this was confusing.

Print less scary warning when invalidating the branch cache.

convert: support binary files, link to files (viceversa) in gnu arch

convert: Don't decode unicode strings This does not work with python2.3 and is probably not useful anyway with 2.4.

convert: Compatibility fixes for python2.3 set -> util.set sort(reverse=True) -> sort(); reverse()

keyword: monkeypatch dispatch._parse to avoid redundant run Inspired by Thomas Arendsen Hein.

keyword: safeguards against erroneous behaviour or aborts prevent issues due to global [keyword] filename patterns: - add email to nokwcommands - protect everything under .hg from expansion (tested with qcommit) - exclude everything starting with .hg* just in case prevent abort when pulling from bundlerepo: - do not set up kwrepo for bundlerepo expansion inside a bundle is nonsense bundlerepo issue spotted and test case provided by pmezard.

keyword: fix pychecker warning about shadowed variable Also no underscore prefix for restricted switch inside reposetup.

convert: improve gnu arch source performance and other fixes - Improve performance by reading 'replay' output instead of calling 'delta' command after 'replay'. This increases speed significantly. - Some times 'replay' command might fail with conflicts (don't know why), a new get from that revision just fixes it. So, if something fails, get a fresh copy from that revision and try from there.

Merge with crew-stable