waf: push go support upstream

[sbinet]

hi,

(a bit gogobject off-topic) could you push your waf's go support upstream ? (I can do it on your behalf if you want)

your go-waftools are much better than what I put in waf eons ago.

-s

[nsf]

Sure, but mine are still incomplete and have a couple of dark corners (mostly within the cgo part) and I'm too lazy to make it complete. But that's a valid request for sure.