[purge] Add --include and --exclude and a 'clean' alias

[Matt Mackall]

On Wed, May 16, 2007 at 10:49:35PM +0200, Emanuele Aina wrote:
> I've added the usual --include and --exclude options to the purge extension.
> 
> In a separate commit I've added the 'clean' alias for purge to make the 
> transition easier for other SCM refugees, as svn has svn-clean and git 
> git-clean.
> 
> Both changes are in my repository at http://techn.ocracy.org/hg-em/ but 
> I can send the patches here if you prefer.

Please, always send patches.

-- 
Mathematics is the supreme nostalgia of our time.