Add toString() to Any, fix all tests

#KT-4517 Fixed

core/builtins/native/jet/Any.kt

@@ -4,4 +4,6 @@ public open class Any {
     public open fun equals(other: Any?): Boolean
 
     public open fun hashCode(): Int
+
+    public open fun toString(): String
 }

core/builtins/native/jet/Library.kt

@@ -35,8 +35,6 @@ public trait CharSequence {
   public fun get(index : Int) : Char
 
   public val length : Int
-
-  public fun toString() : String
 }
 
 public class String() : Comparable<String>, CharSequence {
@@ -44,7 +42,6 @@ public class String() : Comparable<String>, CharSequence {
 
   public override fun compareTo(that : String) : Int
   public override fun get(index : Int) : Char
-  public override fun toString() : String
   public override val length: Int
 }
 

core/builtins/src/jet/Progressions.kt

@@ -34,7 +34,7 @@ public class ByteProgression(
 
     override fun hashCode(): Int = 31 * (31 * start.toInt() + end) + increment
 
-    fun toString(): String = if (increment > 0) "$start..$end step $increment" else "$start downTo $end step ${-increment}"
+    override fun toString(): String = if (increment > 0) "$start..$end step $increment" else "$start downTo $end step ${-increment}"
 }
 
 public class CharProgression(
@@ -53,7 +53,7 @@ public class CharProgression(
 
     override fun hashCode(): Int = 31 * (31 * start.toInt() + end) + increment
 
-    fun toString(): String = if (increment > 0) "$start..$end step $increment" else "$start downTo $end step ${-increment}"
+    override fun toString(): String = if (increment > 0) "$start..$end step $increment" else "$start downTo $end step ${-increment}"
 }
 
 public class ShortProgression(
@@ -72,7 +72,7 @@ public class ShortProgression(
 
     override fun hashCode(): Int = 31 * (31 * start.toInt() + end) + increment
 
-    fun toString(): String = if (increment > 0) "$start..$end step $increment" else "$start downTo $end step ${-increment}"
+    override fun toString(): String = if (increment > 0) "$start..$end step $increment" else "$start downTo $end step ${-increment}"
 }
 
 public class IntProgression(
@@ -91,7 +91,7 @@ public class IntProgression(
 
     override fun hashCode(): Int = 31 * (31 * start + end) + increment
 
-    fun toString(): String = if (increment > 0) "$start..$end step $increment" else "$start downTo $end step ${-increment}"
+    override fun toString(): String = if (increment > 0) "$start..$end step $increment" else "$start downTo $end step ${-increment}"
 }
 
 public class LongProgression(
@@ -110,7 +110,7 @@ public class LongProgression(
 
     override fun hashCode(): Int = (31 * (31 * (start xor (start ushr 32)) + (end xor (end ushr 32))) + (increment xor (increment ushr 32))).toInt()
 
-    fun toString(): String = if (increment > 0) "$start..$end step $increment" else "$start downTo $end step ${-increment}"
+    override fun toString(): String = if (increment > 0) "$start..$end step $increment" else "$start downTo $end step ${-increment}"
 }
 
 public class FloatProgression(
@@ -130,7 +130,7 @@ public class FloatProgression(
 
     override fun hashCode(): Int = 31 * (31 * java.lang.Float.floatToIntBits(start) + java.lang.Float.floatToIntBits(end)) + java.lang.Float.floatToIntBits(increment)
 
-    fun toString(): String = if (increment > 0) "$start..$end step $increment" else "$start downTo $end step ${-increment}"
+    override fun toString(): String = if (increment > 0) "$start..$end step $increment" else "$start downTo $end step ${-increment}"
 }
 
 public class DoubleProgression(
@@ -157,6 +157,6 @@ public class DoubleProgression(
         return (31 * result + (temp xor (temp ushr 32))).toInt()
     }
 
-    fun toString(): String = if (increment > 0) "$start..$end step $increment" else "$start downTo $end step ${-increment}"
+    override fun toString(): String = if (increment > 0) "$start..$end step $increment" else "$start downTo $end step ${-increment}"
 }
 

core/builtins/src/jet/Range.kt

@@ -23,5 +23,5 @@ public trait Range<T : Comparable<T>> {
 
     public fun contains(item: T): Boolean
 
-    public fun toString(): String = "$start..$end"
+    override fun toString(): String = "$start..$end"
 }

core/builtins/src/jet/Unit.kt

@@ -17,7 +17,7 @@
 package jet
 
 public class Unit private() {
-    fun toString() = "Unit.VALUE"
+    override fun toString() = "Unit.VALUE"
 
     class object {
         public val VALUE: Unit = Unit()

core/descriptor.loader.java/src/org/jetbrains/jet/lang/resolve/java/lazy/types/LazyJavaType.kt

@@ -49,13 +49,13 @@ abstract class LazyJavaType(storageManager: StorageManager) : AbstractJetType(),
 
     override fun getAnnotations() = Annotations.EMPTY
 
-    override fun toString(): String? {
+    override fun toString(): String {
         if (!_typeConstructor.isComputed()) {
             return "Type constructor is not computed"
         }
         if (!_arguments.isComputed()) {
             return "" + getConstructor() + "<arguments are not computed>"
         }
-        return super<AbstractJetType>.toString()
+        return super<AbstractJetType>.toString()!!
     }
 }