Fix mercurial http URL
Fix mercurial http URL

When accessing a Mercurial Repo via http, a FileNotFoundError was being throw,
this was due to an api incompatibility. Patch from Kevin Kubasik.

Testing done: Tested on both of my mercurial repos. Hosted at
http://bitbucket.org Unfortunately, I do not have access to any other HTTP repos
at this time.

Reviewed at http://reviews.review-board.org/r/474/



bkochendorfer/reviewboard,1tush/reviewboard,custode/reviewboard,reviewboard/reviewboard,bkochendorfer/reviewboard,sgallagher/reviewboard,1tush/reviewboard,Khan/reviewboard,chazy/reviewboard,chazy/reviewboard,KnowNo/reviewboard,atagar/ReviewBoard,asutherland/opc-reviewboard,reviewboard/reviewboard,Khan/reviewboard,1tush/reviewboard,chipx86/reviewboard,asutherland/opc-reviewboard,brennie/reviewboard,Khan/reviewboard,KnowNo/reviewboard,atagar/ReviewBoard,chazy/reviewboard,reviewboard/reviewboard,1tush/reviewboard,1tush/reviewboard,custode/reviewboard,chazy/reviewboard,Khan/reviewboard,beol/reviewboard,bkochendorfer/reviewboard,atagar/ReviewBoard,davidt/reviewboard,Khan/reviewboard,KnowNo/reviewboard,Khan/reviewboard,custode/reviewboard,custode/reviewboard,1tush/reviewboard,beol/reviewboard,beol/reviewboard,brennie/reviewboard,chipx86/reviewboard,asutherland/opc-reviewboard,Khan/reviewboard,Khan/reviewboard,Khan/reviewboard,chazy/reviewboard,atagar/ReviewBoard,chazy/reviewboard,sgallagher/reviewboard,davidt/reviewboard,asutherland/opc-reviewboard,beol/reviewboard,atagar/ReviewBoard,1tush/reviewboard,1tush/reviewboard,brennie/reviewboard,atagar/ReviewBoard,chazy/reviewboard,brennie/reviewboard,chipx86/reviewboard,bkochendorfer/reviewboard,davidt/reviewboard,sgallagher/reviewboard,atagar/ReviewBoard,KnowNo/reviewboard,chipx86/reviewboard,atagar/ReviewBoard,atagar/ReviewBoard,chazy/reviewboard,sgallagher/reviewboard,reviewboard/reviewboard,chazy/reviewboard,davidt/reviewboard,1tush/reviewboard