Processing vararg flag of parameter for primitives and wrappers.

#KT-2776 fixed

compiler/testData/loadJava/kotlinSignature/propagation/parameter/InheritVarargInteger.kt

@@ -0,0 +1,12 @@
+package test
+
+public trait InheritVarargInteger: Object {
+
+    public trait Super: Object {
+        public fun foo(vararg p0: Int?)
+    }
+
+    public trait Sub: Super {
+        override fun foo(vararg p0: Int?)
+    }
+}