SMV: test for module instance as module argument

This adds a test from the SMV manual, in which a module instance is passed
as argument to another module.

Author: kroening

regression/smv/modules/module_argument1.desc

@@ -0,0 +1,8 @@
+CORE
+module_argument1.smv
+
+^EXIT=0$
+^SIGNAL=0$
+--
+^warning: ignoring
+--

regression/smv/modules/module_argument1.smv

@@ -0,0 +1,15 @@
+-- from the NuSMV 2.7 manual
+
+MODULE main
+ VAR
+  a : bar;
+  m : foo(a);
+
+MODULE bar
+ VAR
+  q : boolean;
+  p : boolean;
+
+MODULE foo(c)
+ DEFINE
+  flag := c.q | c.p;