Remove lpsolve's dependency upon <sys/timeb.h>.

Looks like I already patched away libcompat.a last year.

OK naddy@

math/lpsolve/core/patches/patch-lp_utils_c

@@ -0,0 +1,14 @@
+$OpenBSD: patch-lp_utils_c,v 1.1 2013/12/07 12:04:55 edd Exp $
+
+<sys/timeb.h> was removed from OpenBSD.
+
+--- lp_utils.c.orig	Fri Dec  6 12:46:33 2013
++++ lp_utils.c	Fri Dec  6 12:46:40 2013
+@@ -5,7 +5,6 @@
+ #include "lp_lib.h"
+ #include "lp_utils.h"
+ #include <time.h>
+-#include <sys/timeb.h>
+ #include "lp_bit.h"
+ 
+ #ifdef FORTIFY