These headers were copied to enable building the Mac dump_syms code that
processes Mach-O files on Linux.

From xnu-8792.41.9 (https://github.com/apple-oss-distributions/xnu at 5c2921b)
i386/_types.h
arm/_types.h
mach/boolean.h
mach/machine.h
mach/thread_status.h
mach/vm_prot.h
mach/i386/boolean.h
mach/i386/vm_types.h
mach/arm/boolean.h
mach/arm/vm_types.h
mach/machine/boolean.h
mach/machine/vm_types.h

From cctools-986 (https://github.com/apple-oss-distributions/cctools at cbe977a)
mach-o/arch.h
mach-o/fat.h
mach-o/loader.h
mach-o/nlist.h

From architecture-282 (https://github.com/apple-oss-distributions/architecture at fe86900)
architecture/byte_order.h