core: move comments with description of C file to top of files

src/plugins/script/script-buffer.c

@@ -1,4 +1,6 @@
 /*
+ * script-buffer.c - display scripts on script buffer
+ *
  * Copyright (C) 2003-2012 Sebastien Helleu <flashcode@flashtux.org>
  *
  * This file is part of WeeChat, the extensible chat client.
@@ -17,10 +19,6 @@
  * along with WeeChat.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-/*
- * script-buffer.c: display scripts on script buffer
- */
-
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>