Support bound function reference inlining

compiler/testData/codegen/boxInline/callableReference/bound/simple.kt

@@ -0,0 +1,17 @@
+// FILE: 1.kt
+
+package test
+
+inline fun foo(x: () -> String, z: String) = x() + z
+
+fun String.id() = this
+
+// FILE: 2.kt
+
+import test.*
+
+fun box() : String {
+    var zeroSlot = "fail";
+    val z = "O"
+    return foo(z::id, "K")
+}