Follow-up to r26154: merge the merge-sensitive-blame branch to trunk.
Follow-up to r26154: merge the merge-sensitive-blame branch to trunk.

* subversion/include/svn_client.h
  (svn_client_blame4): Correct @since to 1.5

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