[Xotcl] Bug: configure step hardwires location of aolserver

[jim at jam.sessionsnet.org]

Hi,

When configuring xotcl in any way whatsoever, if the configure step determines
it should build with aolserver extensions, it assumes the only possible place
for aolserver is in /usr/local/aolserver, a mistaken assumption for the same
reason that it's possible to install cat or grep in any location on the 
unix installation.

The right way to do this is to add a configure.in option which would include
a specification of where aolserver is located. Suggestion, this option could
be named --with-aolserver=<dir>. Also, there should exist --without-aolserver.

-Jim