Reviewed-by: erikv

This makes it easier to find problems.

Reviewed-by: kkoehne

Avoids problems when e.g. running 'make clean' - this one tries
to delete all files named core.

Task-number: BAUHAUS-565
Reviewed-by:erikv

Task-number: QTCREATORBUG-961

See BAUHAUS-435
Inside a modification group/transaction we disable undo/redo

All files have been renamed from Qml to QDeclarative.
Registration of types is now done in an initializer method.
QmlView/QDeclarativeView doesn't have an execute method any more.
QDeclarativeMetaObject became private API.
QmlMetaProperty / QDeclarativeProperty has now different API.

If rewrting fails we have to set back the textModifier

Reviewed-by: Erik Verbruggen

Fix namespace usage such that all classes in shared/qml live in the
Qml namespace, and classes in QmlDesigner plugin in the QmlDesigner
namespace.

This should prevent any symbol clashes until we can finally get rid
of the file dublicates (e.g. QmlDocument).

The usage of 'int newIndex' was ambiguous in the case of
oldIndex < newIndex. Solved by directly passing the ModelNode that was
moved around.

'nodeSlidedToIndex' was also renamed to 'nodeOrderChanged', since
'Slided' is no proper English.

If you continue to fix qml errors in text mode, but still had errors,
the error message you got in the Design mode always stayed the first
(outdated) error message.

This adds a new "Design" mode that can be used to manipulate qml files
in a visual way. It will only get build if you have the declarativeui
module in Qt.

This is a squashed import from the Bauhaus project. Share & enjoy :)