Inline callable references

#KT-6900 Fixed

compiler/testData/codegen/boxInline/callableReference/topLevel.1.kt

@@ -0,0 +1,9 @@
+import test.*
+
+fun box() : String {
+    return if (call(10, ::calc) == 5) "OK" else "fail"
+}
+
+fun calc(p: Int) : Int {
+    return p / 2
+}