[IR] Supported inlining of adapted references + tests

compiler/testData/codegen/boxInline/callableReference/adaptedReferences/inlineVararg.kt

@@ -0,0 +1,20 @@
+// DONT_TARGET_EXACT_BACKEND: WASM
+// WASM_MUTE_REASON: IGNORED_IN_JS
+// !LANGUAGE: +NewInference
+
+// FILE: 1.kt
+package test
+
+inline fun foo(f: (Int, Int) -> Int): Int =
+        f(42, 117)
+
+inline fun bar (vararg xs: Int): Int {
+        var sum = 0
+        for (x in xs) sum += x
+        return sum
+}
+
+// FILE: 2.kt
+import test.*
+
+fun box(): String = if (foo(::bar) == 159) "OK" else "fail"