Merge r1822305 from trunk:

* modules/lua/config.m4: Link mod_lua against -lcrypt if available,
  since mk_password_hash() can use crypt().

[too boring for CHANGES]

Submitted by: jorton
Reviewed by: jorton, jim, ylavic


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1823623 13f79535-47bb-0310-9956-ffa450edef68