Pack create_hash_table tables better.

<https://webkit.org/b/121517>

Reviewed by Sam Weinig.

Source/JavaScriptCore:

Reduces JavaScriptCore binary size by 4648 bytes.

* create_hash_table:
* runtime/Lookup.h:

    Reorder HashTableValue members to avoid unnecessary padding.

Source/WebCore:

Reduces WebCore binary size by 72744 bytes.

* bindings/scripts/CodeGeneratorJS.pm:
(GenerateHashTable):

    Updated for new HashTableValue member order.

* bindings/scripts/test/JS/*:

    Rebaselined bindings tests.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@156009 268f45cc-cd09-0410-ab3c-d52691b4dbfc