Add grep command. It currently searches all revs of every matching file. I'll change this soon so that it can still do this, but it will not be the default behaviour. Many options are unimplemented. There's only one output mode. Binary files are not handled yet.

Map long option names containing dashes to ones containing underscores.

Minor test-help fix

Fixed some synopsises in command help.

Added missing doc strings for two new debug commmands.

Adjust display and alignment of command options to match global options.

Clean up displaying help of global options, only one row per option.

Moved --cwd handling to a place where ui and exception handling already exists.

Allow --help and --version being used together.

Added options -h/--help.

Moved special handling of --version and no hg command from parse to dispatch. This allows e.g. 'hg status --version' to work.

Sort global options by topic: directories, ui, timing, other (and changed indentation to match command table)

run the doc/* through aspell.

Removed forgotten debug print statement from commands.py and tests.

Update tests

Fix a couple fencepost errors in hg log