Support static method references

#KT-5123 Fixed

compiler/testData/codegen/boxWithStdlib/callableReference/function/enumValueOfMethod.kt

@@ -0,0 +1,9 @@
+enum class E {
+    ENTRY
+}
+
+fun box(): String {
+    val f = E::valueOf
+    val result = f("ENTRY")
+    return if (result == E.ENTRY) "OK" else "Fail $result"
+}

compiler/testData/codegen/boxWithStdlib/callableReference/function/javaCollectionsStaticMethod.kt

@@ -0,0 +1,13 @@
+// KT-5123
+
+import java.util.Collections
+import java.util.ArrayList
+
+fun box(): String {
+    val numbers = ArrayList<Int>()
+    numbers.add(1)
+    numbers.add(2)
+    numbers.add(3)
+    (Collections::rotate)(numbers, 1)
+    return if ("$numbers" == "[3, 1, 2]") "OK" else "Fail $numbers"
+}