Switch pidentd to using sysctl()s instead of libkvm. It now doesn't need

to be linked with libkvm... this should fix a lot of strange problems
people report with pidentd.

This is for -CURRENT only, at the moment.

security/pidentd/files/patch-ak

@@ -0,0 +1,15 @@
+--- src/freebsd.c.orig	Wed Jul 14 15:23:56 1999
++++ src/freebsd.c	Wed Jul 14 15:24:51 1999
+@@ -1,3 +1,7 @@
++#include <osreldate.h>
++#if __FreeBSD_version >= 400007
++#include "freebsd4.c"
++#else
+ /*
+ ** freebsd.c	   Low level kernel access functions for FreeBSD 2.x
+ **
+@@ -306,3 +310,4 @@
+ 
+   return -1;
+ }
++#endif

security/pidentd/files/patch-al

@@ -0,0 +1,35 @@
+--- /dev/null	Wed Jul 14 15:27:00 1999
++++ src/freebsd4.c	Thu Jul  8 15:52:57 1999
+@@ -0,0 +1,32 @@
++#include <sys/param.h>
++#include <sys/types.h>
++#include <sys/socket.h>
++#include <sys/sysctl.h>
++#include <sys/ucred.h>
++
++#include <netinet/in.h>
++
++int
++k_open(void) {
++
++	return 0;
++}
++
++int k_getuid(struct in_addr *faddr, int fport, struct in_addr *laddr,
++	     int lport, int *uid) {
++	struct sockaddr_in sin[2];
++	struct ucred uc;
++	size_t oldlen = sizeof(uc);
++
++	sin[0].sin_addr.s_addr = laddr->s_addr;
++	sin[1].sin_addr.s_addr = faddr->s_addr;
++	sin[0].sin_port = (u_short)lport;
++	sin[1].sin_port = (u_short)fport;
++
++	if (sysctlbyname("net.inet.tcp.getcred", &uc, &oldlen, sin,
++	    sizeof(sin)))
++		return -1;
++
++	*uid = uc.cr_uid;
++	return 0;
++}