OOP: semantic check - abstract method body; template in params; more conf tests (issue #427)

Signed-off-by: Miklos Magyari miklos.magyari@sigmatechnology.se

Semantic_Analizer_Tests/src/Basic_tests/OopNegativeSemanticTest.ttcn

@@ -87,6 +87,15 @@ type class @trait ClassWithAbstract3 {
 	function @abstract f_abs();
 }
 
+type class @abstract ClassWithAbstract4 {
+	function @abstract f_abs1(in charstring pl_str);
+	function f_non_abs(in charstring pl_str) { 
+		//dummy implementation
+	}
+	public function @abstract f_abs2();
+}
+
+type class InheritedAbstract extends ClassWithAbstract4 { }
 
 type class SuperClass {
 	var integer vl_a;