introduce bb_putchar(). saves ~1800 on uclibc (less on glibc).

diff --git a/e2fsprogs/old_e2fsprogs/uuid/uuid_time.c b/e2fsprogs/old_e2fsprogs/uuid/uuid_time.c
index b54d673..b6f73e6 100644
--- a/e2fsprogs/old_e2fsprogs/uuid/uuid_time.c
+++ b/e2fsprogs/old_e2fsprogs/uuid/uuid_time.c
@@ -147,7 +147,7 @@
 		printf(" (random)\n");
 		break;
 	default:
-		puts("");
+		bb_putchar('\n');
 	}
 	if (type != 1) {
 		printf("Warning: not a time-based UUID, so UUID time "