* configure.in: Do not preprocess src/Makefile.in.
(cpp_undefs, CPP_NEED_TRADITIONAL): Remove.
(AC_EGREP_CPP): Test no longer needed.
* configure: Regenerate.
* config.bat: Do not preprocess src/Makefile.in.
* make-dist: No more Makefile.c files.
* INSTALL, src/README: Makefiles are not preprocessed.
* src/Makefile.in, src/autodeps.mk, src/deps.mk, src/ns.mk:
Convert comments to Makefile format.
* lib-src/Makefile.in (distclean): No more Makefile.c.
* src/Makefile.in (bootstrap-clean): No more Makefile.c.
* admin/notes/cpp: Remove file.
* admin/quick-install-emacs (AVOID): No more Makefile.c files.
* etc/PROBLEMS, etc/MACHINES: Remove details of cpp problems which can
no longer occur.
* configure.in (ns_frag): New output file.
* src/Makefile.in (${ns_appdir}, ${ns_appbindir}Emacs, ns-app):
Move these rules to ns.mk.
* ns.mk: New file. Copyright years based on date of nextstep merge.
* msdos/sed1v2.inp(@ns_frag@): Edit to nothing.