Standardize on the vi editing directives being on the first line.
diff --git a/e2fsprogs/ext2fs/rw_bitmaps.c b/e2fsprogs/ext2fs/rw_bitmaps.c
index 50f2a94..a5782db 100644
--- a/e2fsprogs/ext2fs/rw_bitmaps.c
+++ b/e2fsprogs/ext2fs/rw_bitmaps.c
@@ -1,3 +1,4 @@
+/* vi: set sw=4 ts=4: */
 /*
  * rw_bitmaps.c --- routines to read and write the  inode and block bitmaps.
  *