Move multi-file codegen testData to boxMultiFile/

There'll be an auto-generated test over this directory

compiler/testData/codegen/boxMultiFile/internalVisibility/1.kt

@@ -0,0 +1 @@
+fun box() = a.x

compiler/testData/codegen/boxMultiFile/internalVisibility/2.kt

@@ -0,0 +1,3 @@
+package a
+
+val x: String = "OK"

compiler/testData/codegen/boxMultiFile/kt1515/1.kt

@@ -0,0 +1,18 @@
+package thispackage
+
+import otherpackage.*
+
+fun box(): String {
+    if (!localUse()) {
+        return "local use failed"
+    }
+    if (!fromOtherPackage()) {
+        return "use from other package failed"
+    }
+    return "OK"
+}
+
+fun localUse(): Boolean {
+    val c = javaClass<Runnable>()
+    return (c.getName()!! == "java.lang.Runnable")
+}

compiler/testData/codegen/boxMultiFile/kt1515/2.kt

@@ -0,0 +1,6 @@
+package otherpackage
+
+fun fromOtherPackage(): Boolean {
+    val c = javaClass<Runnable>()
+    return (c.getName()!! == "java.lang.Runnable")
+}

compiler/testData/codegen/boxMultiFile/kt1528/1.kt

@@ -0,0 +1 @@
+fun box() = foo()

compiler/testData/codegen/boxMultiFile/kt1528/2.kt

@@ -0,0 +1,4 @@
+private val a = "OK"
+fun foo() : String {
+  return "${a}"
+}

compiler/testData/codegen/boxMultiFile/kt1845/1.kt

@@ -0,0 +1,6 @@
+public var v1: String = "V1"
+
+fun box(): String {
+    val s = "v1: $v1, v2: $v2"
+    return "OK"
+}

compiler/testData/codegen/boxMultiFile/kt1845/2.kt

@@ -0,0 +1 @@
+public var v2: String = "V2"

compiler/testData/codegen/boxMultiFile/kt2060/1.kt

@@ -0,0 +1,12 @@
+import testing.ClassWithInternals
+
+public class HelloServer() : ClassWithInternals() {
+    public override fun start() {
+        val test = foo() + someGetter //+ some
+    }
+}
+
+fun box() : String {
+    HelloServer().start()
+    return "OK"
+}

compiler/testData/codegen/boxMultiFile/kt2060/2.kt

@@ -0,0 +1,11 @@
+package testing; // There is no error if both files are in default package
+
+public abstract class ClassWithInternals {
+   protected var some: Int = 0;
+   protected var someGetter: Int = 0
+      get() = 5
+
+   protected fun foo() : Int = 0
+
+   public abstract fun start() : Unit;
+}

compiler/testData/codegen/boxMultiFile/kt2257/1.kt

@@ -0,0 +1,3 @@
+fun box() = o + k
+
+private val o = "O"

compiler/testData/codegen/boxMultiFile/kt2257/2.kt

@@ -0,0 +1,3 @@
+private val k = "K"
+
+fun ignore() = o

compiler/testData/codegen/boxMultiFile/nestedPackages/1.kt

@@ -0,0 +1,3 @@
+package a.b
+
+fun box() = a.x

compiler/testData/codegen/boxMultiFile/nestedPackages/2.kt

@@ -0,0 +1,3 @@
+package a
+
+private val x: String = "OK"

compiler/testData/codegen/boxMultiFile/sameFileName/1/box.kt

@@ -0,0 +1 @@
+fun box() = box1() + "K"

compiler/testData/codegen/boxMultiFile/sameFileName/2/box.kt

@@ -0,0 +1 @@
+fun box1() = "O"

compiler/testData/codegen/boxMultiFile/simple/1.kt

@@ -0,0 +1 @@
+fun box() = ok()

compiler/testData/codegen/boxMultiFile/simple/2.kt

@@ -0,0 +1 @@
+fun ok(res: String = "OK") = res