Allow anchor tags in the URL for line number in a given file

[GoogleCodeExporter]

Handle an anchor tag in a file URL to jump to a line number like gitweb does by 
appending #l<number> to the blob.

Also annoying problem is that since the UI renders the file lines using <li>, 
the generated numbers are not searchable in a browser. So there is currently no 
way to jump to a particular line by its number.

Original issue reported on code.google.com by vnagarn...@google.com on 22 Feb 2013 at 10:20