2010-01-11 Tristan Gingold <gingold@adacore.com>

2010-01-11  Tristan Gingold  <gingold@adacore.com>

	* mach-o.h (bfd_mach_o_backend_data): Add arch field.
	(bfd_mach_o_set_arch_mach): New prototype.
	* mach-o.c (bfd_mach_o_mkobject): Define with bfd_mach_o_gen_mkobject.
	(bfd_mach_o_set_arch_mach): New function.
	(bfd_mach_o_gen_mkobject): New function.
	Set TARGET_ARCHITECTURE for the generic back-ends.
	* mach-o-target.c (bfd_mach_o_set_arch_mach): Remove define.
	Check that TARGET_ARCHITECTURE is defined.
	Add TARGET_ARCHITECTURE in TARGET_NAME_BACKEND structure.
	* mach-o-i386.c (TARGET_ARCHITECTURE): Define.