The ftp.idsoftware.com server died several months back. Some context:
<https://www.doomworld.com/forum/topic/96999-rip-ftpidsoftwarecom/>
Instead, point at the mirrors found in the idgames repository, using
the gamers.org version since this is the canonical copy everything else
mirrors from. Unfortunately it's not possible to point at the Doomworld
idgames interface since the patches don't appear in the database there.
Define and pass LONG_EXE_NAME and LONG_GAME_NAME within the
controlling Makefile when generating INSTALL.*, instead of
deriving their values within the template depending on whether
DOOM/HERETIC/HEXEN/STRIFE are defined.
This means we can incorporate the values from @PROGRAM_PREFIX@
and @PACKAGE_SHORTNAME@, instead of hardcoding chocolate- and
Chocolate, respectively.
Doomworld is now available over https: so there's no reason to link
to unencrypted http: URLs (which are just redirect anyway). Also the
idgames interface URLs have changed.
Remove note about CDs that don't contain the IWADs on-disk as I don't
think any exist.
Subversion-branch: /branches/v2-branch
Subversion-revision: 2636
