Properly represent binary files in patches when using git-svn.

When adding/changing binary files against a git-svn repository, the binary
files would be filtered out of the diff. We now represent binary files
properly by faking the information in a diff.

Patch by Anthony Cruz.
Reviewed at http://reviews.reviewboard.org/r/1194/

AUTHORS

@@ -6,6 +6,7 @@ Lead Developers:
 
 Contributors:
 
+	* Anthony Cruz
 	* Chris Clark
 	* Dan Savilonis
 	* Dana Lacoste

rbtools/postreview.py

@@ -2138,6 +2138,13 @@ def make_svn_diff(self, parent_branch, diff_lines):
                 else:
                     # We already printed the "--- " line.
                     diff_data += "+++ %s\t(working copy)\n" % filename
+            elif line.startswith("new file mode"):
+                # Filter this out.
+                pass
+            elif line.startswith("Binary files "):
+                # Add the following so that we know binary files were added/changed
+                diff_data += "Cannot display: file marked as a binary type.\n"
+                diff_data += "svn:mime-type = application/octet-stream\n"
             else:
                 diff_data += line