ext/puma_http11/mini_ssl.c - add Puma::MiniSSL::Engine#ssl_vers_st
ext/puma_http11/mini_ssl.c - add Puma::MiniSSL::Engine#ssl_vers_st

1. Add method Puma::MiniSSL::Engine#ssl_vers_st.  This returns connection protocol version and SSL_state_string info.

2. Add 12 bit mask for ssl erors of type SSL_ERROR_SSL that do not involve certificate verification.  This translates numbers suffixing error message to match numbers in OpenSSL's 'SSL reason codes' defined  include/openssl/sslerr.h

looker/puma,puma/puma,puma/puma,puma/puma,looker/puma,eileencodes/puma,looker/puma,eileencodes/puma,puma/puma,eileencodes/puma,eileencodes/puma,looker/puma