Task-number: QTCREATORBUG-1608

Enable setting breakpoints, and showing the script console even if
the QmlInspector plugin is not loaded.

Reviewed-by: hjk

Task-number: QTCREATORBUG-2337

Task-number: QTCREATORBUG-2334

Also introduce a indirection, modes have now types, edit and debug have
the same type, and editors do have a prefered type of modes instead of a
prefered mode.

That fixes the bug that if the prefered qml editing mode was set to
design, then in switching between qml editors would
- in Edit Mode: stay in edit mode
- in Debug Mode: switch to debug mode

extract thread names from QThread object name

Task-Number: QTCREATORBUG-382
Reviewed-by: hjk

Task-number: QTCREATORBUG-2322

Task-number: QTCREATORBUG-1600

... on clicking stack frames or disassembler/
memory views.

Introduce flags to openEditorAt, pass
EditorManager::NoModeSwitch where applicable.

Task-number: QTCREATORBUG-2278

Reorder the tab widgets so the inspector show up by default
when debugging QML

Rubber-stamped-by: hjk

Reviewed-by: hjk

Task-number: QTCREATORBUG-2201

The scriptconsole layout come from the old qmlinspector

Reviewed-by: hjk

A new debugger engine, QmlCppEngine, is introduced, which wraps gdb
and qml engines into one. Alternatively, if using Windows, Cdb is used
instead of Gdb.

Most of the debugger ui switcher is now rewritten, and it is tailored
for the QML and CPP layout case, the only one supported anyway.

Reviewed-by: hjk

Make sure DebuggerRunner::finished() is always connected to
handleFinished() (even for subclassed DebuggerRunners). Add
some more debugging information.

...which subclasses DebuggerRunner and does not call
DebuggerPlugin::startDebugger(), which connects the
engine, leading to strange malfunctions. Move functionality
to DebuggerRunner::start() to make it self-contained.
Add object names to engines for easier debugging.

Reviewed-by: hjk

Fix breakage introduced by the new asynchronous stop() methods
of the debugger run controls. Allow for RunControl::stop() to
be asynchronous by introducing a return enumeration indicating
that. Introduce additional method aboutToStop() asking user
to quit (tie that to the RunControl instead of having to hack
the behaviour elsewhere).
If asynchronous stop is detected, terminate the ProjectExplorer
asynchronously.
This makes the behaviour consistent across switching sessions/
closing outputwindow tabs and quitting Qt Creator.

Reviewed-by: dt
Rubber-stamped-by: hjk

done by Lasse

Using more *::Constants::ICON_* where it makes sense and
wrapping the file names into QLatin1String where they were
missing.

The increased usage of the ICON constants needed a few more
cross plugin includes of *constants.h, here and there.
I think that it is OK, since the dependencies were alredy there
icon resource wise.

"continuable"

Reviewed-by: con