[CMake] Once again: Nasm/Yasm support.

[Rodrigo Madera]

Dear folks:

I subscribed to this list because there is still no out-of-the-box
support for assembly source code compilation (or I am astoundingly
ignorant).

1) How can I do that for Nasm/Yasm support?
2) Is there any plan to do so on a release?
3) Since it's open source and all about sharing, how can I help to
implement this? (if it's not too time consuming)

Thanks for listening =)
Rodrigo