Add -ip-options support

NmapOps.h

@@ -293,6 +293,13 @@ class NmapOps {
   char *dns_servers;
   bool log_errors;
 
+  /* ip options used in build_*_raw() */
+  u8 *ipoptions;
+  int ipoptionslen;
+  int ipopt_firsthop;	// offset in ipoptions where is first hop for source/strict routing
+  int ipopt_lasthop;	// offset in ipoptions where is space for targets ip for source/strict routing
+
+
   // Statistics Options set in nmap.cc
   int numhosts_scanned;
   int numhosts_up;