Update from 1.3.6 to 1.3.7.
*) Feature: OCSP stapling support.
Thanks to Comodo, DigiCert and GlobalSign for sponsoring this work.
*) Feature: the "ssl_trusted_certificate" directive.
*) Feature: resolver now randomly rotates addresses returned from cache.
Thanks to Anton Jouline.
*) Bugfix: OpenSSL 0.9.7 compatibility.
Fix SIZE line for ldap third-party module.