freebsd: Fix raw sockets on FreeBSD.

Seems I broke this in commit 6711ba5
"raw-sockets:  Assume platforms support raw socket input/output."

Reported, bisected and tested by: Edwin Schokkenbroek

Signed-off-by: Ben Greear <greearb@candelatech.com>

xorp/site_scons/config/allconfig.py

@@ -21,6 +21,7 @@
 import os
 import string
 from SCons.Script.SConscript import SConsEnvironment
+import fnmatch;
 
 # TODO SCons support for headerfilename needs to be fixed at source--
 # that would let us use confdefs.h for the include file header
@@ -226,10 +227,11 @@ def DoAllConfig(env, conf, host_os):
     if has_af_inet and has_sock_raw:
         conf.Define('HAVE_IP_RAW_SOCKETS')
         # TODO:  This needs to be properly detected.
-        # TODO:  This used to check for bsd and linux in an error prone
-        #        way.  Now, do negative checks, but this could break Solaris
+        # TODO:  This used to check for openbsd and linux in an error prone
+        #        way.  Now, do negative checks, but this could break Solaris and other OS
         #        (or not..no idea if it supports raw or not).
-	if not (env.has_key('mingw') and env['mingw']):
+	if not ((env.has_key('mingw') and env['mingw']) or
+                fnmatch.fnmatch(host_os, 'freebsd*')):
             conf.Define('IPV4_RAW_OUTPUT_IS_RAW')
             conf.Define('IPV4_RAW_INPUT_IS_RAW')