Migrate boxInline tests to new multi-file framework

compiler/testData/codegen/boxInline/reified/isCheck/chain.2.kt

@@ -1,10 +0,0 @@
-package test
-
-class A
-class B
-
-inline fun <reified T> Any?.foo() = this is T
-
-inline fun <reified Y> Any?.foo2() = foo<Y?>()
-
-inline fun <reified Z> Any?.foo3() = foo2<Z>()

compiler/testData/codegen/boxInline/reified/isCheck/chain.kt

@@ -1,3 +1,18 @@
+// FILE: 1.kt
+
+package test
+
+class A
+class B
+
+inline fun <reified T> Any?.foo() = this is T
+
+inline fun <reified Y> Any?.foo2() = foo<Y?>()
+
+inline fun <reified Z> Any?.foo3() = foo2<Z>()
+
+// FILE: 2.kt
+
 import test.*
 
 fun box(): String {
@@ -21,4 +36,4 @@ fun box(): String {
     if (b.foo3<A?>() != false) return "fail 10"
 
     return "OK"
-}
+}

compiler/testData/codegen/boxInline/reified/isCheck/nullable.2.kt

@@ -1,6 +0,0 @@
-package test
-
-class A
-class B
-
-inline fun <reified T> Any?.foo() = this is T?

compiler/testData/codegen/boxInline/reified/isCheck/nullable.kt

@@ -1,3 +1,14 @@
+// FILE: 1.kt
+
+package test
+
+class A
+class B
+
+inline fun <reified T> Any?.foo() = this is T?
+
+// FILE: 2.kt
+
 import test.*
 
 fun box(): String {
@@ -21,4 +32,4 @@ fun box(): String {
     if (b.foo<A?>() != false) return "fail 10"
 
     return "OK"
-}
+}

compiler/testData/codegen/boxInline/reified/isCheck/simple.2.kt

@@ -1,6 +0,0 @@
-package test
-
-class A
-class B
-
-inline fun <reified T> Any?.foo() = this is T

compiler/testData/codegen/boxInline/reified/isCheck/simple.kt

@@ -1,3 +1,14 @@
+// FILE: 1.kt
+
+package test
+
+class A
+class B
+
+inline fun <reified T> Any?.foo() = this is T
+
+// FILE: 2.kt
+
 import test.*
 
 fun box(): String {
@@ -21,4 +32,4 @@ fun box(): String {
     if (b.foo<A?>() != false) return "fail 10"
 
     return "OK"
-}
+}