ia64-hpux patches from Steve Ellcey.

ia64-hpux patches from Steve Ellcey.
	* archures.c: (bfd_mach_ia64_elf64, bfd_mach_ia64_elf32) Add defines
	to differentiate elf32 and elf64 on ia64.
	* bfd-in2.h: Regenerate.
	* config.bfd: Add target for "ia64*-*-hpux*".
	* configure.in: Add bfd_elf32_ia64_big_vec to selvecs switch.
	* configure: Regenerate.
	* cpu-ia64.c (bfd_ia64_elf32_arch) Add elf32 arch info structure.
	* targets.c: Add bfd_target bfd_elf32_ia64_big_vec.
	* Makefile.am: Make elf32-ia64.c and elf64-ia64.c derived objects
	from elfxx-ia64.c.  Add depenency rules for making elf32-ia64.lo.
	* Makefile.in: Regnerate.
	* elf64-ia64.c: Deleted
	* elfxx-ia64.c: New file, paramaterized version of elf64-ia64.c.