README.rst: Note about jansson
configure.ac: Output the result jansson detection and enable_hdtest
nghttp, nghttpd: Use :authority and host instead of :host
nghttpx: Use :authority and host instead of :host
nghttpx: Code cleanup
src/HttpServer: Fix compile error
Apply initiated SETTINGS changes on reception of ACK
Update error code
Rename NGHTTP2_ERR_FRAME_TOO_LARGE as NGHTTP2_ERR_FRAME_SIZE_ERROR
Use FRAME_SIZE_ERROR for invalid payload length
Change maximum frame length to 16383
Update doc
nghttp, nghttpd: Add SETTINGS timeout handling

SETTINGS timeout is 10 seconds for now.
Use bit shift for easy reading
Declare HTTP-draft-07/2.0
Include std lib headers before cunit header file