SideBySide2: Show project name before file path

On large complex projects like Android its useful to know which
project a file is in when reviewing the file.  Its common for
reviewers to span projects and many projects may have a common file
like Makefile or BUCK.

Bug: issue 148
Change-Id: I3c8e4fbc57be7de723199cf647508238f4a9feb7
3 files changed