Honor INCLUDE_FILES when performing svn diff
Review Request #5721 — Created April 18, 2014 and discarded
Currently, the -I INCLUDE_FILES arguments are forgotten when performing
rbt diffin an SVN repository, and the diff generated includes all modified files. Originally reported at: https://groups.google.com/d/msg/reviewboard/ATWLrhKXxSQ/9y-uCcJRSpEJ
Generated some local diffs, tested with directory and file arguments of varying number. Seems to work now the way it used to on 0.5.6, generating diffs including only the specified files.