0.12.6dev: reduce execution time of `SubversionMergePropertyDiffRenderer` by calling `repos._get_node_revs()` only when new revisions differ from old revisions in each path and passing `first` and `last` arguments (refs #11219)
0.12.6dev: reduce execution time of `SubversionMergePropertyDiffRenderer` by calling `repos._get_node_revs()` only when new revisions differ from old revisions in each path and passing `first` and `last` arguments (refs #11219)


git-svn-id: 7bda06b145a4a8e9a7f4be07d7c3eb82923a12d6@12959 af82e41b-90c4-0310-8c96-b1721e28e2e2

walty8/trac,walty8/trac,walty8/trac,jun66j5/trac-ja,jun66j5/trac-ja,jun66j5/trac-ja,jun66j5/trac-ja,walty8/trac