Merge with -stable

notify: update test

Fix issue 1782 don't do url2pathname conversion for urls And only replace os-dependent path separators when necessary

color: allow multiple args to ui.write()

extdiff: fix defaulting to "diff" if no --program is given

dirstate: add/improve method docstrings. - add doc to __init__(), _map(), status() - enhance for __getitem__() - fix inaccurate doc for walk() (described wrong return type)

util.system: Use subprocess instead of os.system subprocess allows the environment and working directory to be specified directly, so the hacks for making temporary changes while forking is no longer necessary. This also fixes failures on solaris where the temporary changes can't be undone because there is no unsetenv.

notify: permit suppression of merge changeset notification In some environments merges occur regularly but with no conflicts, and committers find merge notifications more of a bother than a help. By setting merge=False in [notify], merge notifications are suppressed. This works both for incoming and for changegroup hooks.

Add script to rewrite revlog to workaround lack of parent deltas. Defaults to rewriting the manifest in the current repository. Based on a patch to rewrite-log by Benoit Boissinot that I found here: http://article.gmane.org/gmane.comp.version-control.mercurial.general/11908

inotify: use cmdutil.service instead of local daemonizing code