one more replication cleanup.  just list the source files once and include their corresponding file vars in the extra dist.  simplify.
one more replication cleanup.  just list the source files once and include their corresponding file vars in the extra dist.  simplify.

kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1,kongr45gpen/bzflag-import-1