Migrate boxInline tests to new multi-file framework

compiler/testData/codegen/boxInline/lambdaClassClash/lambdaClassClash.kt

@@ -0,0 +1,28 @@
+// FILE: 1.kt
+
+package zzz
+
+
+inline fun calc(crossinline lambda: () -> Int): Int {
+    return doCalc { lambda() }
+}
+
+fun doCalc(lambda2: () -> Int): Int {
+    return lambda2()
+}
+
+// FILE: 2.kt
+
+//NO_CHECK_LAMBDA_INLINING
+import zzz.*
+
+fun box(): String {
+
+    val p = { calc { 11 }} ()
+
+    val z = { calc { 12 }}()
+
+    if (p == z) return "fail"
+
+    return "OK"
+}