* peicode.h (coff_swap_filehdr_out) [COFF_IMAGE_WITH_PE]: Define

* peicode.h (coff_swap_filehdr_out) [COFF_IMAGE_WITH_PE]: Define
as _bfd_XXi_only_swap_filehdr_out.
(pe_mkobject) [PEI_FORCE_MINIMUM_ALIGNMENT]: Set
pe->force_minimum_alignment to TRUE.
(pe_mkobject) [PEI_TARGET_SUBSYSTEM]: Set pe->target_subsystem to
PEI_TARGET_SUBSYSTEM.
(pe_print_private_bfd_data): Call
_bfd_XX_print_private_bfd_data_common() instead of
_bfd_pe_print_private_bfd_data_common().
(pe_bfd_copy_private_bfd_data): Call
_bfd_XX_bfd_copy_private_bfd_data_common() instead of
_bfd_pe_bfd_copy_private_bfd_data_common().
(coff_bfd_copy_private_section_data): Define as
_bfd_XX_bfd_copy_private_section_data instead of
_bfd_pe_bfd_copy_private_section_data.
(coff_get_symbol_info): Define as _bfd_XX_get_symbol_info instead
of a _bfd_pe_get_symbol_info.

* peigen.c: Delete.

* peXXigen.c: Renamed from peigen.c.
(COFF_WITH_XX): Define this macro (will get expanded into
COFF_WITH_pep or COFF_WITH_pe, depending on whether this is being
compiled as peigen.c or pepigen.c.
[COFF_WITH_pep]: Include "coff/ia64.h" instead of "coff/i386.h" to
define the canonical PEP structures and definitions.
(_bfd_XXi_swap_aouthdr_out): If pe->force_minimum_alignment is in
effect, enforce minimum file and section alignments.  If
extra->Subsystem is IMAGE_SUBSYSTEM_UNKNOWN, set it to
pe->target_subsystem (this defaults to IMAGE_SUBSYSTEM_UNKNOWN,
so, by default, this is a no-op).

* libpei.h: Rename COFF_WITH_PEP to COFF_WITH_pep.
(_bfd_XX_bfd_copy_private_bfd_data_common): Add macros to map
_bfd_XXfoo to _bfd_pepfoo if COFF_WIT_PEP is defined and to
_bfd_pefoo if it's not defined.  Use these macros to define
coff swap macros.

* libcoff.h (pe_tdata): Add members target_subsystem and
force_minimum_alignment.

* efi-app-ia64.c (COFF_WITH_pep): Rename COFF_WITH_PEP to
COFF_WITH_pep.
(PEI_TARGET_SUBSYSTEM): Rename from PEI_DEFAULT_TARGET_SUBSYSTEM.

* configure.in (bfd_efi_app_ia64_vec): Use pepigen.lo instead of
peigen.lo.

* coff-ia64.c: Rename COFF_WITH_PEP to COFF_WITH_pep.
(AOUTSZ): Rename PEP64AOUTSZ and PEP64AOUTHDR to PEPAOUTSZ and
PEPAOUTHDR.

* Makefile.in (BFD64_BACKENDS): Mention pepigen.lo.
(BFD64_BACKENDS_CFILES): Mention pepigen.c
(peigen.c): Add rule to generate from peXXigen.c.
(pepigen.c): Ditto.
(pepigen.lo): List dependencies for pepigen.lo.

* unwind-ia64.c (unw_decode_x1): Declare code arg with
ATTRIBUTE_UNUSED.
(unw_decode_x2): Ditto.
(unw_decode_x3): Ditto.
(unw_decode_x4): Ditto.

* pe.h (PEPAOUTSZ): Rename from PEP64AOUTSZ.
Rename from PEPAOUTHDR.