msantos/crypt — pull request #2 by snar (2014-08-04 09:27:37+00:00)
Title: Nif locking: thread-safety on platforms lacking crypt_r

FreeBSD 10 lacks crypt_r function too. So,
a) configure script introduced to check for crypt_r function and header
b) access to crypt function is protected by erlang mutex, so nif is thread-safe even on
platforms lacking crypt_r.