Wrapped some additional commands
Created originally on Bitbucket by dsparkplug (Dave Sparks)
Wrapped util.listdir and os.utime commands.
util.listdir is used by 'hg add' and 'hg status'.
os.utime is used by 'hg archive'.
Fixes some outstanding problems with issue #13 (closed)
Original Bitbucket Pull Request is from fork dsparkplug/win32lfn that has not been imported