Move blackBoxFile() testData to box/ directory

Delete all test methods (and empty test classes), since they'll be
auto-generated

compiler/testData/codegen/box/arrays/arrayGetMultiIndex.kt

@@ -8,4 +8,4 @@ fun box(): String {
     s[1, -1] = "OK"
     return s[-2, 2]
 }
- 
+ 

compiler/testData/codegen/box/arrays/kt238.kt

@@ -55,4 +55,4 @@ class StrangeIntArray(size: Int) {
     fun set(index: Int, v: Int) {
         defaultValue = v
     }
-}
+}

compiler/testData/codegen/box/arrays/kt33.kt

@@ -3,4 +3,4 @@ fun box () : String {
     s.add("foo")
     s[0] += "bar"
     return if(s[0] == "foobar") "OK" else "fail"
-}
+}

compiler/testData/codegen/box/arrays/kt503.kt

@@ -29,4 +29,4 @@ fun box() : String {
 fun thirdElementIsThree(a : IntArray) =
 // Problematic code does not compile
 //    a.size >= 3 & a[2] == 3
-    a.size >= 3 && a[2] == 3
+    a.size >= 3 && a[2] == 3

compiler/testData/codegen/box/arrays/kt594.kt

@@ -13,4 +13,4 @@ fun box() : String {
     if(a?.get(0)?.get(0) != "239") return "fail"
 
     return "OK"
-}
+}

compiler/testData/codegen/box/arrays/kt779.kt

@@ -0,0 +1,3 @@
+val <T> Array<T>.length : Int get() = this.size
+
+fun box() = if(Array(10, {1}).length == 10) "OK" else "fail"

compiler/testData/codegen/box/bridges/overrideReturnType.kt

@@ -10,4 +10,4 @@ fun box(): String{
     val d : C = D()
     if(d.f() != "D f") return "fail f"
     return "OK"
-}
+}

compiler/testData/codegen/box/classes/delegation2.kt

@@ -21,4 +21,4 @@ fun box() : String {
     if(c.foo() != "aaa") return "fail"
     if(c.bar() != "bbb") return "fail"
     return "OK"
-}
+}

compiler/testData/codegen/box/classes/delegation4.kt

@@ -25,4 +25,4 @@ fun box() : String {
         return "Fail #4"
 
     return "OK"
-}
+}

compiler/testData/codegen/box/classes/delegationMethodsWithArgs.kt

@@ -31,4 +31,4 @@ fun box() : String {
     if (textField.moo(1,2,3) != 6) return "FAIL #2"
 
     return "OK"
-}
+}

compiler/testData/codegen/box/classes/diamondInheritance.kt

@@ -21,4 +21,4 @@ fun box() : String {
     if (vr(d) != 42) return "Fail #3"
 
     return "OK"
-}
+}

compiler/testData/codegen/box/classes/funDelegation.kt

@@ -14,4 +14,4 @@ fun box() : String {
     if (!test(Derived1())) return "Fail #2"
     if (!test(Derived2())) return "Fail #3"
     return "OK"
-}
+}

compiler/testData/codegen/box/classes/inheritance.kt

@@ -38,4 +38,4 @@ fun box() : String {
     if (p4.x + p4.y != 239) return "FAIL #7"
 
     return "OK"
-}
+}

compiler/testData/codegen/box/classes/kt1018.kt

@@ -9,4 +9,4 @@ public class StockMarketTableModel() {
     }
 }
 
-fun box() : String = if(StockMarketTableModel().getColumnCount()==10) "OK" else "fail"
+fun box() : String = if(StockMarketTableModel().getColumnCount()==10) "OK" else "fail"

compiler/testData/codegen/box/classes/kt1134.kt

@@ -4,4 +4,4 @@ public class SomeClass() : java.lang.Object() {
 public fun box():String {
     System.out?.println(SomeClass().getClass())
     return "OK"
-}
+}

compiler/testData/codegen/box/classes/kt1157.kt

@@ -25,4 +25,4 @@ public fun box():String {
     if(SomeClass.bug is Throwable)
       throw SomeClass.bug as Throwable
     return "OK"
-}
+}

compiler/testData/codegen/box/classes/kt1345.kt

@@ -10,4 +10,4 @@ class MyFactory() : Factory {
     override fun create(): Actor = Actor()
 }
 
-fun box() : String = MyFactory().create().code
+fun box() : String = MyFactory().create().code