Remove any awareness of *.c util files about target.

	Remove any awareness of *.c util files about target.

	* Makefile.util.def (grub-setup): Split to ...
	(grub-bios-setup): ... and this.
	(grub-sparc64-setup): ... and this.
	* configure.ac: Don't add machine_CPPFLAGS into HOST_CPPFLAGS.
	* docs/man/grub-setup.h2m: Split into ...
	* docs/man/grub-sparc64-setup.h2m: ... this.
	* docs/man/grub-bios-setup.h2m: ... and this.
	* include/grub/dl.h (grub_dl) [GRUB_UTIL]: Remove struct.
	* include/grub/elf.h (Elf_*) [GRUB_UTIL]: Remove types.
	(GRUB_TARGET_WORDSIZE) [GRUB_UTIL]: Remove.
	(grub_target_addr_t): Remove.
	(grub_target_size_t): Remove.
	(grub_target_ssize_t): Remove.
	* util/grub-install.in: Use new grub-*-setup.
	* util/grub-mkimagexx.c (Elf_Word): New define.
	(Elf_Half): Likewise.
	(Elf_Section): Likewise.
	(ELF_ST_TYPE): Likewise.
	* util/grub-setup.c: Switch from GRUB_MACHINE_SPARC64 to
	GRUB_SETUP_SPARC64 and from GRUB_MACHINE_PCBIOS to GRUB_SETUP_BIOS.