Variable names of package hierarchies

In XEmacs 21.5 the variable names for package hierarchies were changed from {early,late,last}-packages to {early,late,last}-package-hierarchies. AUCTeX looks for the old variable names in its build procedure and fails when being configured with XEmacs 21.5 due to the change of names. (This was reported by Clemens Fruhwirth on the AUCTeX bug mailing list.) I am wondering if any other packages out there might get the same problem as soon as they will be used with XEmacs 21.5 and if it made sense to supply aliases for the old variable names. It's no problem if you don't want to do this. Then I'll simply adapt the relevant function call in AUCTeX's build procedure. -- Ralf