Michał Gorynia

[WIP] Support mruby 1.4.1

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In relation to issue: #98 I've also wanted to upgrade to mruby 1.4.1. Applying few _hacks_ (I just wanted to make it run first, then think about doing things properly)....

ssl.verify_client uses only first certificate in chain to perform validation

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### Problem When I define multiple CA certificates: ``` -----BEGIN CERTIFICATE----- -----END CERTIFICATE----- -----BEGIN CERTIFICATE----- -----END CERTIFICATE----- ``` parse them using `ssl.parse_pem_cert`, and pass the resulting cert chain to `ssl.verify_client`,...