* changed signature of ownAircraftModelChanged to model
* added function for a reverse lookup of a model (string->model) and use it when model changed
* renamed function to updateByLocalFileNames
All model matching will be done simulator independent in
CContextSimulator. The simulator specific part is kept in the model
set.
This also caused the signal modelMatchingCompleted to be renamed to
aircraftRenderingChanged, since the name wasn't accurate anymore.
Both getInstalledModels(), getInstalledModelsCount() and iconForModel()
were removed from the ISimulator interface.
refs #765
Physically removing an aircraft which was not yet rendered or known is
undefined behavior.
In this particular case, adding an aircraft the first time caused
its model to be updated, which called slot
ISimulator::changeRemoteAircraftModel, trying to remove an aircraft
which was not yet added and adding it again. This ends up
in an endless loop.
* removed iconForModel from interface and aircraft config parser
* CPixmap support for loading pixmap from file
* Access to model of model set loader by model string
* icon path as member of CAircraftModel
