[jhc] darcs patch: automake/autoconf default to autodetecting base-4 and ...

Mon Jun 22 20:04:11 PDT 2009 coreyoconnor@gmail.com * automake/autoconf default to autodetecting base-4 and using that if detected This patch changes configure to autodetect the base-4 package and modifies the PACKAGES makefile variable to include base-4 (along with syb) if base-4 is detected. This also adds --enable-base-4 and --disable-base-4 options to configure. Detection of base 4 package can be improved.