Add last_stream_id parameter to nghttp2_submit_goaway().  To terminate
connection immediately with application chosen last stream ID,
nghttp2_session_terminate_session2() was added.

This commits also fixes last stream ID in GOAWAY uses wrong stream ID.

Thanks for Pascal

Make the check for a valid index range a macro, so the compiler doesn't
whine if it's not used, but it's available if it *is* used.

This change also reverts previous commits and tty is set to false if
syslog is used.

The original patch was contributed by Alexis La Goutte

Libevent Openssl filter is very inconvenient in various respect.  The
most annoying thing is it somehow emits data when SSL_shutdown is
called.  The reason we introduced this filter solution is drop
connection if TLS renegotiation is detected.  This commit implements
renegotiation detection and drop connection without filtering.

Also don't compare ALPN identifier with streq, since they are just
byte string.

Cipher suites are chosen by DHE and ECDHE ciphers + GCM (AEAD).  Now
default cipher list is the one recommended by Mozilla web site.  The
--honor-cipher-order option is removed and now it is always assumed.

Conflicts:
	lib/nghttp2_session.c

Now local and remote settings values are stored in dedicated structure
nghttp2_settings_storage.