fix syntax highlighting for cvs diff and multibyte language diff
Review Request #738 — Created Feb. 4, 2009 and discarded
There are two change: 1. for cvs diff, filename we got from diff file will be something like "a.python,v", if we don't strip ",v", then syntax hightliging won't work. 2. tell pygments encoding is "utf-8", otherwise chinese (or other multibyte language) character in source code won't display correctly