(VERSION): Update to 0.23.

(VERSION): Update to 0.23.
(CONCORD_OPTS): New variable.
(all): Call `build-concord'.
(install): Call `install-core'.
(force-config-concord): New target.
(config-concord): Likewise.
(concord/config.h): Likewise.
(build-concord): Likewise.
(install-concord): Likewise.
($(PREFIX)/lib/libconcord.a): Likewise.
(config-libchise): Call `install-concord' and `libchise/config.h'.
(libchise/config.h): New target.
(build-libchise): Cqll `config-libchise'.
(install-libchise): Call `build-libchise' and
`$(PREFIX)/lib/libchise.a'.
($(PREFIX)/lib/libchise.a): New target.
(install-core): New target.
(install-db): Changed for new layout.
(config-xemacs): Call `xemacs-chise/src/config.h'.
(xemacs-chise/src/config.h): New target.
(install-xemacs): Call `install-libchise' and `$(PREFIX)/bin/xemacs'.
($(PREFIX)/bin/xemacs): New target.
(install-ids): Call `install-xemacs'.
(install-base): New target.
(generate-db): Call `install-base' instead of `install-xemacs' and
`install-ids'.
(chise-db): Change directory layout.
(tar-core): Copy `concord'.
(get-base): New target.
(concord): New target.
(libchise): Call `.cvs-login'.
(xemacs-chise): Likewise.
(ids): Likewise.
(.cvs-login): New target.
(distclean): Add cleaner for concord/.
(db-clean): New target.
(cvs-clean): New target.