Ported the compile-time class setup for object literals to be run-time based

Change-Id: I21225e4bf0f66914229cf64fa29ce870548c0e93
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Get rid of the QV4::Function in the masm isel

Change-Id: Ide70ca5a3f3dcc793fb96fd64f8b8df6b07d1168
Reviewed-by: Lars Knoll <lars.knoll@digia.com>