Migrate boxInline tests to new multi-file framework

compiler/testData/codegen/boxInline/lambdaClassClash/lambdaClassClash.1.kt

@@ -1,13 +0,0 @@
-//NO_CHECK_LAMBDA_INLINING
-import zzz.*
-
-fun box(): String {
-
-    val p = { calc { 11 }} ()
-
-    val z = { calc { 12 }}()
-
-    if (p == z) return "fail"
-
-    return "OK"
-}

compiler/testData/codegen/boxInline/lambdaClassClash/lambdaClassClash.2.kt

@@ -1,10 +0,0 @@
-package zzz
-
-
-inline fun calc(crossinline lambda: () -> Int): Int {
-    return doCalc { lambda() }
-}
-
-fun doCalc(lambda2: () -> Int): Int {
-    return lambda2()
-}

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"
+}

compiler/testData/codegen/boxInline/lambdaClassClash/noInlineLambdaX2.2.kt

@@ -1,9 +0,0 @@
-package test
-var s: Int = 1;
-
-inline fun Int.inlineMethod() : Int {
-    noInlineLambda()
-    return noInlineLambda()
-}
-
-inline fun Int.noInlineLambda() =  { s++ } ()

compiler/testData/codegen/boxInline/lambdaClassClash/noInlineLambdaX2.kt

@@ -1,3 +1,17 @@
+// FILE: 1.kt
+
+package test
+var s: Int = 1;
+
+inline fun Int.inlineMethod() : Int {
+    noInlineLambda()
+    return noInlineLambda()
+}
+
+inline fun Int.noInlineLambda() =  { s++ } ()
+
+// FILE: 2.kt
+
 //NO_CHECK_LAMBDA_INLINING
 import test.*
 fun test1(): Int {
@@ -9,4 +23,4 @@ fun box(): String {
     if (result != 2) return "test1: ${result}"
 
     return "OK"
-}
+}