Add support for deleted file indication on Git and Perforce.

Review Request #1939 — Created Nov. 22, 2010 and submitted

Information

Review Board
master

Reviewers

Add support for deleted file indication on Git and Perforce.

In 1.5, the diff viewer and CVS gained support for marking a file as
deleted and showing it specially. The Git and Perforce support has been
updated to flag this as well.
Unit tests all passed.