Alternative port that supports more platforms

[sno2]

I created a new port from scratch that supports more platforms and uses an external nasm source. I believe my port solves #3 , #5, and #6.

https://github.com/sno2/nasm

Let me know if you would like to adopt my repository in place of this one.

Edit: cc @andrewrk

Edit x2: Updated my port to NASM 3.01.