Remove an interface promise that was not honoured and was not necessary.
Remove an interface promise that was not honoured and was not necessary.

* subversion/include/svn_client.h (svn_client_status)
  The implementation always touches *result_rev, so don't promise not to.

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