Basic Git and Mercurial support.
Implemented DVCS base class which hould be used in all DVCS plugins, it prevents plugins from duplicating code

fixed bug in git: now all system environment variables are set

fixed bug in mercurial: job<<" "<<" " or job<<"";job<<""; should be used instead of job<<"one two"

Thomas, sorry for removing your code. I was commiting to <a href="http://repo.or.cz/w/kdevelopdvcssupport.git">http://repo.or.cz/w/kdevelopdvcssupport.git</a>; because mercurial plugin had a bug (you did the same bug with job<< usage).

If you want to help with DVCS: Bazaar is not implemented yet (but it required much less job, than you did to implement mercurial).