polish, mop up whitespace, etc.

passes regressions on MirOS

exec.c

@@ -1,4 +1,5 @@
-/*	$OpenBSD: exec.c,v 1.31 2003/12/15 05:25:52 otto Exp $	*/
+/* $MirBSD: exec.c,v 1.2 2004/05/24 19:56:07 tg Stab $ */
+/* $OpenBSD: exec.c,v 1.31 2003/12/15 05:25:52 otto Exp $	*/
 
 /*
  * execute command tree
@@ -151,7 +152,7 @@ execute(t, flags)
 				goto Break;
 			}
 		}
-	
+
 	switch(t->type) {
 	  case TCOM:
 		rv = comexec(t, tp, ap, flags);