Remove several internal property types for primitive objects. (#1399)

Class and value internal properties are always exists for primitive
types (e.g. Boolean, Regex) so they can be stored right after the
object. This improve property access (since internal properties are
searched by a slow linear algorithm) and reduces memory consumption,
since only 8 byte is allocated for these two properties instead of
16 which is the size of a property pair.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

jerry-core/ecma/base/ecma-alloc.h

@@ -114,12 +114,12 @@ extern void ecma_dealloc_external_pointer (ecma_external_pointer_t *);
  *
  * @return pointer to allocated memory
  */
-extern ecma_extended_object_t *ecma_alloc_extended_object (void);
+extern ecma_extended_object_t *ecma_alloc_extended_object (size_t);
 
 /**
  * Dealloc memory of an extended object
  */
-extern void ecma_dealloc_extended_object (ecma_extended_object_t *);
+extern void ecma_dealloc_extended_object (ecma_extended_object_t *, size_t);
 
 /**
  * Allocate memory for ecma-property pair