Reduce the time it takes to perform a no-change commit in my test working copy (based on cmpilato's suggestion) by another 15% by avoiding property processing when we already know that the properties didn't change.
Reduce the time it takes to perform a no-change commit in my test working copy
(based on cmpilato's suggestion) by another 15% by avoiding property processing
when we already know that the properties didn't change.

* subversion/libsvn_client/commit_util.c
  (harvest_committables): Only call check_prop_mods() if the db tells us that
    the properties changed.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion