1.0.2dev: Use the repository to find the previous_rev instead of the database cache.  (refs #3446)
1.0.2dev: Use the repository to find the previous_rev instead of the database cache.  (refs #3446)

git-svn-id: 3bd1c7f5b9365705bff4dd56977498491f5ac132@11953 af82e41b-90c4-0310-8c96-b1721e28e2e2

exocad/exotrac,exocad/exotrac,exocad/exotrac,exocad/exotrac