Follow up to r15242 and r15400 with doc string fixes.
Follow up to r15242 and r15400 with doc string fixes.

* subversion/include/svn_repos.h
  (svn_repos_authz_access_t, svn_authz_t, svn_repos_authz_read,
   svn_repos_authz_check_access): Add "@since New in 1.3." to doc strings.

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