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, 6 insertions, 1 deletions

diff --git a/inet_v6defs.h b/inet_v6defs.h
index 2c686ca346..dfbef3e985 100644
--- a/inet_v6defs.h
+++ b/inet_v6defs.h
@@ -1,6 +1,6 @@
 /* inet_v6defs.h
  *
- * $Id: inet_v6defs.h,v 1.3 2000/07/14 07:11:53 guy Exp $
+ * $Id: inet_v6defs.h,v 1.4 2000/08/11 13:34:19 deniel Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@zing.org>
@@ -21,6 +21,9 @@
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
 
+#ifndef __INET_V6DEFS_H__
+#define __INET_V6DEFS_H__
+
 /*
  * Versions of "inet_pton()" and "inet_ntop()", for the benefit of OSes that
  * don't have it.
@@ -45,3 +48,5 @@ extern const char *inet_ntop(int af, const void *src, char *dst,
 #ifndef __P
 #define __P(args)	args
 #endif
+
+#endif