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/column.c b/column.c
index 9bff391618..1c802807ac 100644
--- a/column.c
+++ b/column.c
@@ -1,7 +1,7 @@
 /* column.c
  * Routines for handling column preferences
  *
- * $Id: column.c,v 1.27 2000/01/10 01:43:47 guy Exp $
+ * $Id: column.c,v 1.28 2000/08/11 13:34:48 deniel Exp $
  *
  * Ethereal - Network traffic analyzer
  * By Gerald Combs <gerald@zing.org>
@@ -39,7 +39,9 @@
 #include <unistd.h>
 #endif
 
+#ifdef HAVE_SYS_STAT_H
 #include <sys/stat.h>
+#endif
 
 #include "timestamp.h"
 #include "prefs.h"