Defined options:
-keep-cvs avoids removing CVS.adm directories. This option is
+keep-cvs avoids removing CVS directories. This option is
actually recognized and handled by the Sanitize shell
script.
keep-cri avoids removing the cray research inc changes to emacs.
keep-chill avoids removing CHILL support.
keep-gm avoids removing GM-specific stuff.
+keep-inet avoids removing I*Net stuff.
lose-gdbtk removes gdbtk stuff. This is really only needed for
FSF GDB releases.