Miscellaneous code cleaning

- add <stdarg.h> or <varargs.h> in snprintf.h
  and remove those inclusions in the other #ifdef NEED_SNPRINTF_H codes

- remove the check of multiple inclusions in source (.c)  code
  (there is a bit loss of _cpp_ performance, but I prefer the gain of
   code reading and maintenance; and nowadays, disk caches and VM are
   correctly optimized ;-).

- protect all (well almost) header files against multiple inclusions

- add header (i.e. GPL license) in some include files

- reorganize a bit the way header files are included:

  First:
  #include <system_include_files>
  #include <external_package_include_files (e.g. gtk, glib etc.)>
  Then
  #include "ethereal_include_files"

  with the correct HAVE_XXX or NEED_XXX protections.

- add some HAVE_XXX checks before including some system header files

- add the same HAVE_XXX in wiretap as in ethereal

Please forgive me, if I break something (I've only compiled and regression
tested on Linux).

svn path=/trunk/; revision=2254

1 files changed, 3 insertions, 1 deletions

diff --git a/wiretap/buffer.c b/wiretap/buffer.c
index b513d39377..2ce99c6053 100644
--- a/wiretap/buffer.c
+++ b/wiretap/buffer.c
@@ -1,6 +1,6 @@
 /* buffer.c
  *
- * $Id: buffer.c,v 1.9 2000/07/31 04:15:58 guy Exp $
+ * $Id: buffer.c,v 1.10 2000/08/11 13:32:37 deniel Exp $
  *
  * Wiretap Library
  * Copyright (c) 1998 by Gilbert Ramirez <gram@xiexie.org>
@@ -29,7 +29,9 @@
 #include <string.h>
 #include <glib.h>
 
+#ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
+#endif
 
 #include "buffer.h"