[PATCH] (re-post) Add "optional_no_ca" option to ssl_verify_client to enable app-only CA chain validation

[elf-pavlik]

bumping +1

required for http://webid.info/
developed in W3C Community Group: http://www.w3.org/community/webid/

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,230748,230749#msg-230749