SunOS fix: Replaced $PWD with `pwd` under certain conditioins $PWD isn't up to date, observed on SunOS 5.8

Add self to CONTRIBUTORS

Fix just introduced possible old-http bug My last patch changed httprangereader.read to read only the specified amount of data from the connection, to prevent it from returning more than what was asked. I just realized that this could lead to the connection not being closed. In practice, it looks like the connection is closed just fine, but it's probably safer to read everything and then return only what's necessary.

Cleanup archive command: Don't overwrite gettext, quoting in cmd table entry.

Small cleanups to backout command: - Accept -m for --message (like commit and similar commands), too. - Don't ignore --logfile option. - Fix command table entry (synopsis, group commit related option)

add backout command. command undoes effect of an earlier commit, commits new changeset as result.

make test-revert check executable bit.

merge with crew.

support hooks written in python. to write hook in python, create module with hook function inside. make sure mercurial can import module (put it in $PYTHONPATH or load it as extension). hook function should look like this: def myhook(ui, repo, hooktype, **kwargs): if hook_passes: return True elif hook_explicitly_fails: return False elif some_other_failure: import util raise util.Abort('helpful failure message') else: return # implicit return of None makes hook fail! then in .hgrc, add hook with "python:" prefix: [hooks] commit = python:mymodule.myhook

merge with crew.