inotify: inotify.server.walk() simplify algorithm Do not yield (bool, tuple) in a subfunction and check later: 'if not bool: yield tuple'. Instead simplify so the tuple doesnt get yielded on the first time, to avoid systematic checks.

inotify: inotify.server.walk cleanups * Removing useless path computation * moving 'reporoot' computation down to the first call to avoid confusion with the parameter used in walkit()

revlog: add cache priming for reconstructing delta chains

revlog: use chunk cache to avoid rereading when splitting inline files

revlog: clean up the chunk caching code

revlog: use index to find index size

revlog: preread revlog .i file Smaller revlogs can be read with a single read, do it on open.

commit: be more verbose in the -u help text Make the requirement of an argument for -u a little more explicit.

separate import lines from mercurial and general python modules

manpage build: fail early when xmlto is not available When we try to build manpages with xmlto and sed, but xmlto is missing fail at the xmlto stage. Otherwise, one may run `cd doc; make' and miss the warnings like: xmlto: not found sed: hg.1: No such file or directory and end up with empty files installed as manpages.