D231 - EBOOT_KIND, so the same eboot can be put through an emulator first

The eboot carries e_type 0xFE00 because a console's rtld refuses 0xFE10 by name. Every emulator refuses 0xFE00 in return - PS5PCEM's module-info says UnsupportedObjectType.

Four bytes, and they meant the shape being changed was the one shape that could not be tested anywhere except on the console. EBOOT_KIND=executable stamps the other value and changes nothing else: same sources, same twelve libraries, same run-time census.

That is not a convenience. D232 below is a regression that would have reached hardware.