Fix possible overflow with very large files in libsvn_delta.
Fix possible overflow with very large files in libsvn_delta.

Patch by: Norbert Unterberg <Norbert@Unterberg.de>

* subversion/libsvn_delta/text_delta.c
  (struct tpush_baton, compute_window): source_offset changed
   from apr_size_t to svn_filesize_t.

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