Minor code cleanup: use svn checksum routines instead of calling apr_md5 functions in the implementation of svn_txdelta_apply().
Minor code cleanup: use svn checksum routines instead of calling apr_md5
functions in the implementation of svn_txdelta_apply().

* subversion/libsvn_delta/text_delta.c
  (struct apply_baton): Make md5_context an svn_checksum_ctx_t.
  (apply_window): Replace apr_md5_final() with svn_checksum_final(),
   compose and handle potential errors.  Replace apr_md5_update() with
   svn_checksum_update().
  (svn_txdelta_apply): Update context initialization.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1805113 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion