[MERGE] 'bzr selftest --clean' allows easily clean temporary tests directories

[John Arbash Meinel]

Alexander Belchenko wrote:
> After discussion about this change I personally don't think that
> bzrtools is *right* solution for me (personally), because not all system
> has bzrtools.
> 
> I'd like to change 'make clean' to use cross-platform solution by using
> python scripts (something similar as I did for clean-docs).
> 
> But anyway, why for clean all (that what 'make clean' do) when I want to
> clean only temp tests directories?
> 
> Alexander
> 

Well if you want cross platform 'make' isn't the best thing to be
writing it under. Since most Windows users won't have Make installed.

Again, I'm not strictly against selftest --clean, I just want to make
sure it is thought through.

John
=:->