Add String.toLocaleLowerCase
Add String.toLocaleUpperCase
Add Number.toLocaleString
Include property names when inlining
Remove extra/invalid constructors (inline)
Fix Object.create to skip non-enumerable properties
8.12.9: Reject instead of just returning false
8.12.9: Merge property descriptors (writable, enumerable, configurable)
8.12.9: Fix panic when [[Writable]] is something but [[Value]] is not
8.12.9: Keep [[Value]] if not explicitly given
Test DefineOwnProperty (Array)
[[Value]] should NOT be set to Undefined if missing