PE dos_message

PE dos_message

I was looking at dos_message and wondering why we have H_PUT_32
in _bfd_XXi_only_swap_filehdr_out but no H_GET_32 in pe_bfd_object_p.
On a big-endian machine this would result in scrambling the code and
strings constained in dos_message.  Rather than fix the lack of
H_GET_32 in pe_bfd_object_p, I decided it doesn't make sense to store
dos_message internally as an array of ints.

include/
	* coff/internal.h (struct internal_extra_pe_filehdr): Make
	dos_message a char array.
	* coff/msdos.h (struct external_DOS_hdr): Flatten dos_message.
	* coff/pe.h (struct external_PEI_filehdr): Likewise.
bfd/
	* libcoff-in.h (struct pe_tdata): Make dos_message a char array.
	* libcoff.h: Regenerate.
	* peXXigen.c (_bfd_XXi_only_swap_filehdr_out): memcpy dos_message
	to output.
	* peicode.h (pe_mkobject): Don't memset already zeroed pe_opthdr.
	Tidy allocation of tdata.pe_obj_data.  Set up dos_message from..
	(default_dos_message): ..this.  New static array.