Log Message:
Replace INFO_DIR with EMACS_INFOPREFIX, which is the correct location for
info files for both emacs and xemacs.  Install the info files correctly
by handling the case where there may be split info files.  List the info
files in the PLIST.  Use EMACS_MODULES where appropriate to replace the
conditional dependency on xemacs-packages.  Bump the PKGREVISION.