Bug#960835: Debian Jessie site lists only 4 archs as supported -- patch for stretch

Hi,

now that Stretch is under LTS (but there are no different point-release
version-numbers for lts-archs and non-lts-archs), I have applied the part
of the patch, needed to display both sets of supported archs (lts archs
and initially-releases archs) on the release page
(also already done for Jessie).


And:
To bring all this to an end, I will (if noone objects) apply the rest of the
patch as well (but commented-out), and do the same for Buster and Bullseye
as well. That way, the mechanism would be in place for all releases, to have 
different point-release version-numbers during LTS period (as it is for jessie).


Holger