patch 8.0.0761: options not set properly for a terminal buffer

Problem:    Options of a buffer for a terminal window are not set properly.
Solution:   Add "terminal" value for 'buftype'.  Make 'buftype' and
            'bufhidden' not depend on the quickfix feature.
            Also set the buffer name and show "running" or "finished" in the
            window title.

src/fileio.c

@@ -6882,9 +6882,7 @@ buf_check_timestamp(
      * this buffer. */
     if (buf->b_ffname == NULL
 	    || buf->b_ml.ml_mfp == NULL
-#if defined(FEAT_QUICKFIX)
 	    || *buf->b_p_bt != NUL
-#endif
 	    || buf->b_saving
 #ifdef FEAT_AUTOCMD
 	    || busy