Make this module obsolete

[jbenet]

I would really, really like to make this module (hack) obsolete.

This requires submitting a good patch to upstream Go. see golang/go#9661

[jbenet]

want.

[b5]

2.5 years later, it seems a go CL slated for go 1.11, which might go some ways toward avoiding this: https://gist.github.com/vyzo/62c3fedcc61b958fa401d1340537fd68#file-gistfile1-txt.

According to the release cycle go 1.11 should hit in late August, might be nice to time an ipfs / libp2p update shortly after.

[Kubuxu]

@b5 My hopes were really high for G1.10 but true, we will have to wait for Go 1.11.

[anacrolix]

The necessary upstream changes have been made, I'll investigate simplifying or removing this package entirely.

[anacrolix]

This repo still has some value as a store for the Control function implementing the socket options for various platforms and Available, in case support isn't present on all platforms. It's possible the remaining behaviour could be merged into the very few repos relying on this repository in the future but I don't think it's clearly worth it at present. We should reopen it if a revisit is required down the track.