ArX now uses Autoconf 2.57 and SCons 0.14 [1] to build.  If you want to
make simple modifications to ArX, then you can just use the included
build_arx, test_arx, and install_arx scripts.  However, it won't be
very efficient, and it won't work if you add or delete files.

If you want to make ArX releases, Perl is required to run the
make_prepackaged_files script.

[1] www.scons.org
