a standalone version of neverbleed

[rock59]

I am developling a proxy server using Golang and a modified version of h2o and libh2o-evloop. I modify h2o and build it as a static library with every h2o new commit to keep current with it. Everythings work fine till 0f08b67. I simply strip out neverbleed related codes from h2o because Golang runtime is not fork() friendly without exec (neverbleed uses fork() without exec ) . But as of 0f08b67, it seems that quicly uses neverbleed for async resumption and I cant simply strip out neverbleed related codes from h2o to make it work fine.

Neverbleed is awesome library and it would be nice to provide a standalone version of neverbleed with a main() entry so developers interesting in neverbleed can use it with fork/exec or h2o_spawn or similar mechanism in their projects.

thanks