Disabled intruder knowledge computation.

Isolated problem causing segfault identified by Simon Meier.

src/intruderknowledge.c

@@ -115,6 +115,13 @@ anySubTerm (Term t, Termlist sublist)
 void
 initialIntruderKnowledge (const System sys)
 {
+  /*
+  TODO this is buggy and leads to a segfault with Simon's example (bug report for wellformedness check)
+  Disabled for now.
+  ./scyther-linux simple-challenge-SEGFAULT.spdl
+  */
+  return;
+
   /*
    * display initial role knowledge
    */