- add netmap-libpcap

- add netmap (FreeBSD header files need to be updated with this)
- move prototype perl scripts to prototype/ folder
- create basic structure for sipcap app (no code yet)

netmap-libpcap/pcap_geterr.3pcap

@@ -0,0 +1,51 @@
+.\" Copyright (c) 1994, 1996, 1997
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that: (1) source code distributions
+.\" retain the above copyright notice and this paragraph in its entirety, (2)
+.\" distributions including binary code include the above copyright notice and
+.\" this paragraph in its entirety in the documentation or other materials
+.\" provided with the distribution, and (3) all advertising materials mentioning
+.\" features or use of this software display the following acknowledgement:
+.\" ``This product includes software developed by the University of California,
+.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+.\" the University nor the names of its contributors may be used to endorse
+.\" or promote products derived from this software without specific prior
+.\" written permission.
+.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+.\"
+.TH PCAP_GETERR 3PCAP "5 April 2008"
+.SH NAME
+pcap_geterr, pcap_perror \- get or print libpcap error message text
+.SH SYNOPSIS
+.nf
+.ft B
+#include <pcap/pcap.h>
+.ft
+.LP
+.ft B
+char *pcap_geterr(pcap_t *p);
+void pcap_perror(pcap_t *p, char *prefix);
+.ft
+.fi
+.SH DESCRIPTION
+.B pcap_geterr()
+returns the error text pertaining to the last pcap library error.
+.BR NOTE :
+the pointer it returns will no longer point to a valid error message
+string after the
+.B pcap_t
+passed to it is closed; you must use or copy the string before closing
+the
+.BR pcap_t .
+.PP
+.B pcap_perror()
+prints the text of the last pcap library error on
+.BR stderr ,
+prefixed by
+.IR prefix .
+.SH SEE ALSO
+pcap(3PCAP)