Tweaks to acl startup in siscog

* etc/acl/holy/holy-startup.lisp (holy-homedir-pathname, flavor-dir)
(holy-load): tweaks to acl startup in siscog

* etc/acl/siscog/50siscog-tests.lisp ("z:/Source/Lisp/siscog-tests/setup.lisp"):
load correct setup.lisp
Misc fixes, mostly no longer delete trailing whitespace
More misc siscog hacks
Get rid of some cruft
More siscog hacks and cleanup