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, 5 insertions, 1 deletions

diff --git a/nlpid.h b/nlpid.h
index cec1e25df0..7f63b4c807 100644
--- a/nlpid.h
+++ b/nlpid.h
@@ -2,7 +2,7 @@
  * Definitions of OSI NLPIDs (Network Layer Protocol IDs)
  * Laurent Deniel <deniel@worldnet.fr>
  *
- * $Id: nlpid.h,v 1.4 2000/04/15 22:11:07 guy Exp $
+ * $Id: nlpid.h,v 1.5 2000/08/11 13:34:19 deniel Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@zing.org>
@@ -24,6 +24,9 @@
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
 
+#ifndef __NLPID_H__
+#define __NLPID_H__
+
 /* ISO/IEC TR 9577 NLPID values. */
 
 #define	NLPID_NULL		0x00
@@ -45,3 +48,4 @@
 
 extern const value_string nlpid_vals[];
 
+#endif