Make it possible (again) to compile qmlobserver in share/qtcreator.
However, build artifacts in there might result in a malfunctioning
qtc-qmlobserver!
Reviewed-by: Thorbjorn Lindeijer
Don't confuse users by two defines they have to comment in when
they just want to 'debug': Instead QMLJSDEBUGGER now activates
both the Js Debugger & and the QmlObserver services. Finetuning
can still be done by using the (undocumented) NO_JSDEBUGGER,
NO_QMLOBSERVER defines.
The problem is that we actually should have both debug & release builds,
but we don't have detection at the moment which binary to use.
See QTCREATORBUG-2496
Reviewed-by: Thomas Hartmann
Moved qmljsdebugger to a dir under qml/, made qmlobserver compile
without creator dependencies and made it compile with debugging
helpers.
Reviewed-by: hjk
