Make bootstrap work again:

Make bootstrap work again:

(boot): New variable.
(src): Pass $(boot) to sub-Make.  Remove src/bootlisp.  If src/bootlisp
exists after running Make, run Make in `lisp' as well.
(clean, mostlyclean): Remove bogus repeated clean in the top-level directory.
(info, bootstrap-clean): New targets.
(bootstrap): Depend only on bootstrap-clean.  Commands modified to be
equivalent to top-level Makefile.in.
(bootfast, bootstrap-lisp-1, bootstrap-lisp, bootstrap-src)
(bootstrap-clean-before, bootstrap-clean-after): Targets deleted.
(clean, mostlyclean, distclean, maintainer-clean, extraclean): Don't recurse
into lwlib and oldXMenu.