* csu/Makefile ($(objpfx)g$(start-installed-name)): Turn this into a

* csu/Makefile ($(objpfx)g$(start-installed-name)): Turn this into a

	static pattern rule also that also covers
	$(objpx)g$(static-start-installed-name).
	[$(start-installed-name) != $(static-start-installed-name)]
	(extra-objs, omit-deps, install-lib): Add
	$(static-start-installed-name) and g$(static-start-installed-name).
	* sysdeps/mach/hurd/i386/Makefile: Don't add crt0.o to those here;
	just setting static-start-installed-name is now sufficient.
	(extra-objs): Add static-start.o here.
	(CFLAGS-initfini.s): Remove obsolete variable.
	* sysdeps/mach/hurd/i386/Makeconfig: New file.
	Define static-start-installed-name here.

	* Makeconfig: Include existing $(full_config_sysdirs:=/Makeconfig).
	* Make-dist (+sysdep-tsrcs): Look for Makeconfig files.

	* Makerules ($(+sysdir_pfx)sysd-Makefile): Remove this target and
	associated hair.  Instead, just use $(wildcard ...) in the include.

	* configure.in (critic_missing, aux_missing): Collect in these vars
	the names of the missing programs, and include them in the error msgs.
	* configure: Regenerated.