Support calling methods annotated with PolymorphicSignature

#KT-14416 Fixed
 #KT-26165 Fixed

compiler/testData/codegen/box/polymorphicSignature/invokeExact.kt

@@ -0,0 +1,22 @@
+// !LANGUAGE: +PolymorphicSignature
+// TARGET_BACKEND: JVM
+// IGNORE_BACKEND: JVM_IR
+// FULL_JDK
+// SKIP_JDK6
+// WITH_RUNTIME
+
+import java.lang.invoke.MethodHandles
+import java.lang.invoke.MethodType
+
+class C {
+    fun foo(s: String, d: Double, x: Int): String = "$s$d$x"
+}
+
+fun box(): String {
+    val mh = MethodHandles.lookup().findVirtual(
+        C::class.java, "foo",
+        MethodType.methodType(String::class.java, String::class.java, Double::class.java, Int::class.java)
+    )
+    val result: String = mh.invokeExact(C(), "Hello", 0.01, 42) as String
+    return if (result == "Hello0.0142") "OK" else "Fail: $result"
+}