Consistify error reporting by using svn_io_file_ wrappers for apr_file calls
Consistify error reporting by using svn_io_file_ wrappers for apr_file calls

* subversion/libsvn_diff/diff_file.c
  (read_chunk): Add required pool parameter and use svn_io_file_ wrappers
  (svn_diff__file_token_compare,
   svn_diff__file_datasource_get_next_token): Add pool to call to read_chunk.
  (svn_diff__file_datasource_open, svn_diff__file_output_unified_line
   map_or_read_file): Use svn_io_file wrappers for apr_file_ functions



git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@848983 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion