copy over swift.authorize stuff into subrequests

If auth is setup in the env then it needs to be copied over with the
make_request wsgi helper.  Also renamed make_request to
make_subrequest- when I grepped for make_request I got > 250 results,
this'll make it easier to find references to this function in the
future.

Updated docs and sample confs to show tempurl needs to be before dlo and
slo as well as auth.

Change-Id: I9750555727f520a7c9fedd5f4fd31ff0f63d8088
Merge "copy over swift.authorize stuff into subrequests"