ad hoc try for internal-state
adding hHost.
Using hHost instead of serverName.
Using hHost instead of serverName.
Tryping to catch up internal-state.

Not perfect yet.
defining hostPort.
catching up WAI 2.0.
Exporting hostPort.
using sockaddr. removing dep for fast-logger.
catching up no-resourcet.

fixme: CGI should be implemented again.
Merge branch 'master' into wai2

Conflicts:
	Network/Wai/Application/Classic/Header.hs
catching up the change of FilePart.
removing Content-Range.
removing addLength.
WAI 2.0 hack (incomplete).
comment style.
Merge branch 'master' into wai2

melpon's patch would be removed depending on WAI 2.0 discussion.
I merge this to not forget this patch.
Using requestHeaderHost.
Relying on Warp's Date.
hlint hack.