Tar compiles on BSD, thanks Roberto E. Vargas Caballero. Also remove tons of trailing whitespace.

cp.c

@@ -9,7 +9,7 @@ int
 main(int argc, char *argv[])
 {
 	struct stat st;
-	
+
 	ARGBEGIN {
 	case 'r':
 		cp_rflag = true;
@@ -17,7 +17,7 @@ main(int argc, char *argv[])
 	default:
 		exit(EXIT_FAILURE);
 	} ARGEND;
-	
+
 	if(argc > 2 && !(stat(argv[argc-1], &st) == 0 && S_ISDIR(st.st_mode)))
 		eprintf("%s: not a directory\n", argv[argc-1]);
 	enmasse(argc, argv, cp);