Add USB protocol and chunking.

The mainFile property of QmlProject is the default file to run. People
have still the opportunity to override this in their run settings,
though.

The wizard generated code was updated accordingly. Note that this makes
projects generated by the wizard incompatible with QtCreator 2.1!

Task-number: QTCREATORBUG-3249

Reviewed-by: Erik Verbruggen

Conflicts:
	doc/qtcreator.qdoc
	src/plugins/qmldesigner/designercore/instances/nodeinstance.cpp
	src/plugins/qt4projectmanager/qmakestep.cpp
	src/plugins/qt4projectmanager/qt-maemo/maemopackagecreationstep.cpp
	src/plugins/qt4projectmanager/qtversionmanager.cpp

Task-number: QTCREATORBUG-3312

This is necessary to handle "live updates". Originally done by ck.

Task-number: QTCREATORBUG-3063

Splitted up patches wrongly

We check the qml file/document now with QmlJSCheck.
We explicitly disable checking of qml types.

We are checking for duplicate ids and duplicate property definitions now.

We have to check also for the ModelNode, but we also have to avoid
recursion.

Reviewed-by: Marco Bubke

Properly detach from rewriter view and node instance view
on model destruction.

Reviewed-by: Marco Bubke

Using the convienience class does not really save code and adds another
needless level in the hierarchy. This affects the three remaining BaseMode
users: Help, ProjectExplorer and HelloWorld.

Reviewed-By: hunger

Reviewed-By: hunger

Reviewed-by: Lasse Holmstedt

Reviewed-by: Roberto Raggi

This code is still needed.

Reviewed-by: dt <qtc-committer@nokia.com>
Task-number: QTCREATORBUG-2511

It could easily be followed by another colon.

Reviewed-by: Roberto Raggi

Makes Creator useable again :)

Makes multiple target factories per project possible

Reviewed-By: hunger

Reviewed-By: hunger

The granularity of the slider was to fine.
So 1 could be a rounded 0.99.

Task-number: QTCREATORBUG-3035
Reviewed-by: Marco Bubke

PathView creates problems and we do not properly support it anyway.
We just create a dummy instance, instead.

Task-number: QTCREATORBUG-3251
Reviewed-by: Marco Bubke