Support "--wait" for invocations from command line on Windows

I would like to use Sublime Text 2 to edit my Mercurial commit messages (and patch descriptions), but invoking "sublime_text.exe --wait some_file" returns immediately instead of waiting until I have finished editing the file.

Also, it would be nice if Sublime Text could open a new window for that file.  ("open_files_in_new_window" is true by default and I haven't changed it.)

Using build 2139.