Autotest for netpacket/packet.h, as it is not available on all Linux versions.

Depend AF_PACKET on HAVE_NETPACKET_PACKET_H.

Author: loewis

configure

@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# From configure.in Revision: 1.242 
+# From configure.in Revision: 1.243 
 
 # Guess values for system-dependent variables and create Makefiles.
 # Generated automatically using autoconf version 2.13 
@@ -1886,7 +1886,7 @@ signal.h stdarg.h stddef.h stdlib.h thread.h unistd.h utime.h termios.h \
 sys/audioio.h sys/file.h sys/lock.h sys/modem.h db_185.h db.h \
 sys/param.h sys/poll.h sys/select.h sys/socket.h sys/time.h sys/times.h \
 sys/un.h sys/utsname.h sys/wait.h pty.h libutil.h \
-ndbm.h db1/ndbm.h gdbm/ndbm.h sys/resource.h
+ndbm.h db1/ndbm.h gdbm/ndbm.h sys/resource.h netpacket/packet.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6

pyconfig.h.in

@@ -611,6 +611,9 @@
 /* Define if you have the <ndir.h> header file.  */
 #undef HAVE_NDIR_H
 
+/* Define if you have the <netpacket/packet.h> header file.  */
+#undef HAVE_NETPACKET_PACKET_H
+
 /* Define if you have the <poll.h> header file.  */
 #undef HAVE_POLL_H