A couple of problems with new packages

[Stephen J. Turnbull]

Vin Shelton writes:

 > Yes, I'll consider it, but whether or not I apply it, we must solve
 > the problem for users of XEmacs <= 21.4.21.  Please make a suggestion
 > so that packages built with 21.5 will work with existing 21.4
 > installs.

AFAIK it's always been an accident if packages built with 21.5 work
with 21.4 installs as the byte interpreter has changed.  At least ISTR
Ben writing something to that effect.