Remove YADFC (yet another deprecated function call).
Remove YADFC (yet another deprecated function call).

* subversion/svnserve/serve.c
  (get_file): Use svn_checksum_t's and assocated APIs.

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