* pe.h (PEP64AOUTHDR): New header for PE+.
(PEP64AOUTSZ): New macro.
(IMAGE_SUBSYSTEM_UNKNOWN): New macro.
(IMAGE_SUBSYSTEM_NATIVE): Ditto.
(IMAGE_SUBSYSTEM_WINDOWS_GUI): Ditto.
(IMAGE_SUBSYSTEM_WINDOWS_CUI): Ditto.
(IMAGE_SUBSYSTEM_POSIX_CUI): Ditto.
(IMAGE_SUBSYSTEM_WINDOWS_CE_GUI): Ditto.
(IMAGE_SUBSYSTEM_EFI_APPLICATION): Ditto.
(IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER): Ditto.
(IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER): Ditto.
* internal.h (PE_DEF_FILE_ALIGNMENT): Define only if not defined
already.
* ia64.h: New file.