Merge branch 'wip-http-engine' of https://github.com/l-mb/fio

* 'wip-http-engine' of https://github.com/l-mb/fio:
  engines/http: Add support for WebDAV and S3

diff --cc HOWTO
Simple merge

diff --cc Makefile
Simple merge

diff --cc fio.1
Simple merge

diff --cc options.c
Simple merge