nghttp2 @1.4.0_0: update to version 1.5.0

[Schamschula (Marius Schamschula)]

nghttp2 has been updated to version 1.5.0. New this version:

• Fix bug that nghttp2_session_find_stream(session, 0) returned NULL
• Add nghttp2_session_change_stream_priority() to change stream priority without sending PRIORITY frame
• Add nghttp2_session_check_server_session() API
• Consider to use CANCEL error code when closing streams with GOAWAY
• Don't send push response if GOAWAY has been received
• Use error code CANCEL to reset pushed reserved stream from remote
• Add nghttp2_session_upgrade2(), deprecate nghttp2_session_upgrade()
• Workaround HTTP upgrade with HEAD request in nghttp2_session_upgrade()
• Introduce NGHTTP2_NV_FLAG_NO_COPY_NAME and NGHTTP2_NV_FLAG_NO_COPY_VALUE
• Add nghttp2_session_check_request_allowed() API function
• Switch to clang-format-3.6
• Update mruby to 1.2.0
• tests: fix broken linkage with --disable-static (Patch from Kamil Dudka)
• python: Send RST_STREAM if remote side is not closed and response finished
• asio: client: call on_error when connection is dropped
• asio: ALPN support
• h2load: Add --h1 option to force http/1.1 for both http and https URI
• h2load: Fix crash when dealing with "connection: close" form HTTP/1.1 server
• h2load: h2load goes into infinite loop when timing script file starts with 0.0 in first line
• h2load: Override user-agent with -H option
• h2load: Print "space savings" to measure header compression efficiency
• h2load: Stream error should be counted toward errored
• h2load: Show application protocol with OpenSSL < 1.0.2
• nghttpx: Don't send RST_STREAM to h2 backend if backend is disconnected state
• nghttpx: Support server push from HTTP/2 backend
• nghttpx: Fix bug that causes connection failure with backend proxy URI
• nghttpx: Use --backend-tls-sni-field to verify certificate hostname
• nghttpx: Log :authority as $http_host if available
• nghttpd: Fix crash with CONNECT request
• nghttpd: Defered eviction of cached fd using timer
• nghttpd: Read /etc/mime.types to set content-type header field
• nghttp: Record request method to output it in har correctly
• nghttp: Use method given in -H with ":method" in HTTP Upgrade

[ryandesign (Ryan Carsten Schmidt)]

Thanks.

[ryandesign (Ryan Carsten Schmidt)]

r143002