Ah, why nobody reads release notes? They saved me so much time...
/If nothing else works, read the manual :)/
What about *SLOW* migration (if it should happen)? FC3 could have /svr
with symlinks to the old /var locations and only some things like
/var/www/{icons,error,manual} moved there (if moved at all) plus a release
note about this. The next FC4 could have everything migrated there and
symlinks in the old location and so on and so on... Maybe symlinks are
not the best choice, but many bind mounts (could solve some issues with
backup scripts) could make things a little bit messy?
BTW: what is really supposed to remain in /var - only run, lib, lock,
log and tmp? Only files that the user should not touch and need or?