ssl: improved error reporting for SSL_accept.
ssl: improved error reporting for SSL_accept.

The return value from SSL_get_error() is an integer switch value, not an error
code that can be interpreted by ERR_error_string()

Report the error code name, plus errno information if available for
SSL_ERROR_SYSCALL as per man page for SSL_get_error().

sartura/libwebsockets,sartura/libwebsockets,sartura/libwebsockets,sartura/libwebsockets,sartura/libwebsockets,sartura/libwebsockets,sartura/libwebsockets