o update to 2.4.23
o disable build time stamp in favor of reproducible build
o remove obsolate scoreboard/status patch
o s/USE_OPENSSL=yes/USES=ssl/
o add OPTION for two new modules:

mod_proxy_hcheck (default=on)
mod_http2_proxy (experimental => default=off)

Changelog:
http://www.apache.org/dist/httpd/CHANGES_2.4.23

MFH: 2016Q3