Add meaningful trace to createDummyInstance error handling

[Reider]

Please add some more trace info in ConstructorInjectionPoint::createDummyInstance.
Currently there is only a trace(error); so when I ran into a null pointer error because of the dummy instance creation flash player bugfix I had to spend a lot time to track down where the error trace was coming from.

Instead of:
catch (error : Error)
{
trace(error);
}

Use something like:

catch (error : Error)
{
trace("Error when creating dummy instance of class " ,clazz, error);
}

Or don't write anything. This could save someone a lot of trouble.

[tschneidereit]

Add meaningful trace to createDummyInstance error handling

Closed by f30555d