Add match-full option to directory-files{,-recur}

Add match-full option to directory-files{,-recur}

    This option fixes the oddity that when matching the file either
    with regex or with predicate one could only use the actual
    filename, and could not consider the full path.  This add
    'match-full to the FULL option, and in this case the regex and
    the predicate will receive the full path not just the filename

    * src/dired.c(directory-files): Add match-full support
      (directory-files-recur): Add match-full support

Signed-off-by: Nelson Ferreira <nelson.ferreira@ieee.org>