* configure.srv [powerpc64-*-linux*]: Use linux-ppc-low.o

	* configure.srv [powerpc64-*-linux*]: Use linux-ppc-low.o
	instead of linux-ppc64-low.o.
	* linux-ppc64-low.c: Remove file.
	* Makefile.in (SFILES): Remove linux-ppc64-low.c.
	(linux-ppc64-low.o): Remove rule.

	* linux-ppc-low.c (init_registers_ppc64): Add prototype.
	(init_registers_powerpc_64): Likewise.
	(ppc_regmap): Conditionally define depending on __powerpc64__.
	(ppc_cannot_store_register): Do not special-case "fpscr" when
	compiled on __powerpc64__.
	(ppc_collect_ptrace_register): New function.
	(ppc_supply_ptrace_register): New function.
	(ppc_breakpoint): Change type to "unsigned int".
	(ppc_breakpoint_at): Change type of "insn" to "unsigned int".
	(the_low_target): Conditionally provide initializers for the
	arch_setup member depending on __powerpc64__.  Install
	collect_ptrace_register and supply_ptrace_register members.