patch 8.0.0466: still macros that should be all-caps

Problem:    There are still a few macros that should be all-caps.
Solution:   Make a few more macros all-caps.
diff --git a/src/ex_cmds.c b/src/ex_cmds.c
index df35f52..0c4dffb 100644
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -2889,7 +2889,7 @@
     {
 	vim_snprintf((char *)numbuf, sizeof(numbuf),
 				   "%*ld ", number_width(curwin), (long)lnum);
-	msg_puts_attr(numbuf, hl_attr(HLF_N));	/* Highlight line nrs */
+	msg_puts_attr(numbuf, HL_ATTR(HLF_N));	/* Highlight line nrs */
     }
     msg_prt_line(ml_get(lnum), list);
 }
@@ -5379,7 +5379,7 @@
 			    msg_no_more = TRUE;
 			    /* write message same highlighting as for
 			     * wait_return */
-			    smsg_attr(hl_attr(HLF_R),
+			    smsg_attr(HL_ATTR(HLF_R),
 				    (char_u *)_("replace with %s (y/n/a/q/l/^E/^Y)?"), sub);
 			    msg_no_more = FALSE;
 			    msg_scroll = i;
@@ -8284,7 +8284,7 @@
 	    else
 		for (n = *p++; n > 0; --n)
 		    if (*p == 'o' || *p == '$')
-			msg_putchar_attr(*p, hl_attr(HLF_L));
+			msg_putchar_attr(*p, HL_ATTR(HLF_L));
 		    else
 			msg_putchar(*p);
     msg_clr_eos();