This update for nghttp2 fixes the following issues:
nghttp2 was update to version 1.40.0 (bsc#1166481)
- lib: Add nghttp2_check_authority as public API - lib: Fix the bug that stream is closed with wrong error code - lib: Faster huffman encoding and decoding - build: Avoid filename collision of static and dynamic lib - build: Add new flag ENABLE_STATIC_CRT for Windows - build: cmake: Support building nghttpx with systemd - third-party: Update neverbleed to fix memory leak - nghttpx: Fix bug that mruby is incorrectly shared between backends - nghttpx: Reconnect h1 backend if it lost connection before sending headers - nghttpx: Returns 408 if backend timed out before sending headers - nghttpx: Fix request stal