JS: Provide MIN_VALUE and MAX_VALUE member constants for Int, Long, Short and Byte companion objects.

JVM: Make MIN_VALUE and MAX_VALUE not an extension but member constant properties of Int, Long, Short and Byte companion objects.

generators/src/org/jetbrains/kotlin/generators/builtins/primitives.kt

@@ -65,6 +65,9 @@ class GeneratePrimitives(out: PrintWriter) : BuiltInsSourceGenerator(out) {
             if (kind == PrimitiveType.FLOAT || kind == PrimitiveType.DOUBLE) {
                 out.print(" : FloatingPointConstants<$className>")
             }
+            if (kind == PrimitiveType.INT || kind == PrimitiveType.LONG || kind == PrimitiveType.SHORT || kind == PrimitiveType.BYTE) {
+                out.print(" : IntegerConstants<$className>")
+            }
             out.println(" {}\n")
 
             generateCompareTo(kind)