Remove now unused QV8Engine::qmlModeCompile methods

Change-Id: I55d89f1e2bd09cde3ef8f3b99bb4138d7247649c
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Remove v8::Script and related classes

Port the last few usages of v8::Script over to the new
v4::Script class.

Change-Id: I0d117d273ca450d29a9111757603da8ae02e4ca4
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Local initialization is now done in codegen

Follow up on 2bd6e240a3c2b3dc7a2c81c639d4f30e4dfd685f
for Qml contexts.

Change-Id: I0c0d417a65cf537fc56696b4f996812b368ab387
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>