Make it work under OpenBSD

[drbig]

Apparently it's completely borked. From building to actually not working at all.

(OpenBSD 5.8 amd64)

[drbig]

Notes from trying this on Linux:

22:02:31 <        dRbiG> drbig@swordfish:23 ~/Projects/snb $ export LANG=''
22:02:31 <        dRbiG> drbig@swordfish:23 ~/Projects/snb $ ./bin/snb help.md 
22:02:31 <        dRbiG> *** Error in `./bin/snb': corrupted double-linked list: 0x0000000001271080 ***

Looks like a bug.