cmdutil: extract ctx dependent closures into templatekw

cmdutil: replace showlist() closure with a function

Merge with crew-stable

convert/svn: make sink recover gracefully from empty changeset Otherwise when processing a changeset that in fact changes no files (perhaps due to bug in import from CVS) can get something like: unexpected svn output: abort: unable to cope with svn output Bug report and patch draft by Jesse Glick <jesse.glick@sun.com>

win32mbcs: Add configuration to specify path encoding Add win32mbcs.encoding configuration option to specify the encoding to use instead of encoding.encoding. This option is useful for the users who want to write UTF-8 log message on non UTF-8 path encoding environment.

Merge with stable

mq: qpop: remove added files before re-adding removed files We need to do this to avoid file/directories conflicts. This causes patches removing a committed file and replacing it with a directory to be "unpoppable".

revlog: rewrite several method docstrings - methods: findmissing(), nodesbetween(), descendants(), ancestors() - the goal is precise, concise, accurate, grammatical, understandable, consistently formatted docstrings

color: Add support for bookmarks

color: Do not pass --color, --no-color parameters to wrapped function Passing the --color and --no-color parameter to the wrapped function can cause a invalid argument exception if the wrapped function doesn't accepts a **opts dict.