Launching an application should return a valid process id

Signed-off-by: Simon Busch <morphis@gravedo.de>
Validate application entry point before launching it

Signed-off-by: Simon Busch <morphis@gravedo.de>
Implement copy c'tor for ApplicationDescription and pass it by reference

Signed-off-by: Simon Busch <morphis@gravedo.de>
Load PalmSystem plugin when application is launched

Signed-off-by: Simon Busch <morphis@gravedo.de>