Fixes many graphics glitches, improve render speed.

Reviewed-By: Thomas Hartmann

Task:     QTCREATORBUG-1297
RevBy:    dt <qtc-committer@nokia.com>

Reviewed-by: dt

Also apply changes to the .qml file in e.g. the Design mode to
the running application.

This removes the remove/set flicker in most single stepping cases.

This is convenient especially in the observer mode.

Reviewed-by: Christiaan Janssen

Any DEFINE used in qmljsdebugger-lib.pri is also passed to the users
code.

Incorporate into qmljsdebugger-lib.pri

Task-number: QTCREATORBUG-2951

Reviewed-by: hjk

Only enable submit button in the git submit editor when a non-empty
desciption of the patch is available. Git rejects empty commit messages
and old versions fail without even giving an error Qt Creator can detect,
so this should make commiting a bit more save.

Task-number: QTCREATORBUG-2410

Do not offer to commit in the dialog opened when closing the
commit editor when the commit is not containing all the required
information.

The user might create directories or delete them while in the browsing
interface, thus in the PathChooser trigger a validation after browsing.

Task-Nr: QTCREATORBUG-3105
Reviewed-By: Friedemann Kleint

Even if no engine is running.

Add optional code model scope checking. Remove need to call
to 'expandlocals' command by giving 'locals' options for expanded
and uninitialized variables, saving one roundtrip.
Handle shadowed variables and __formal parameters. Differentiate
between name and iname in SymbolGroup.

 * Warn on spaces in the project path
 * Warn on special characters in the project name only

This should stop warnings from appearing when trying to run the Qt demos
on symbian.

Fix default names of project configuration objects on upgrades
from pre 2.0 creators.

Task-number: QTCREATORBUG-3143

Removing a property from a Flipabke back or front property
resulted in a crash, because the offset of UiObjectBinding
was not handled correctly.
The left hand side of the binding is not part of the node anymore.

Reviewed-by: Kai Koehne

Reviewed-by: Alessandro Portale

Task-number: QTCREATORBUG-3141