* callback function to data consolidation (so I can refer to consolidation in BlackCore)
* use status message in parser
* avoid duplicate keys (WOAI has ambiguous model strings which are to be excluded)
* 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
* moved caches to blackmisc
* used CModelCaches in loader
* applied changes in simulator specific loader classes
* renamed find function to findFirstByModelStringOrDefault
* made merge function static so it can be used elsewhere
Before this change, the model strings were assembled via some
relatives pathes - long and very hard to read. Now it is assembled
via the pattern
<package root dir> <dir> ... <objectname> <texturename>
<package root dir> = the parent directory of xsb_aircrafts.txt
<dir> ... = directory hierarchy down to the object file
refs #574
The following issues were fixed
* Fixed wrong/missing namespaces
* Fixed obvious typos in documentation
* Documentation not in sync with source code
refs #544
