[CMake] configuration based add_custom_command

[Robert Bielik]

Michael Hertling skrev 2011-08-24 14:49:
> Anyway, I didn't want to discuss this particular detail; my
> point is: Configuration-selective custom commands possibly have
> far-reaching consequences which should be carefully reasoned out.

I see your point. This would be a good thing to do, however, as it would be a great addition to an already
great tool :)

Regards,
/Rob