wintun.inf and wintun.cat have no version resource. WiX linker cannot
determine their versions and the MSM will use file sizes and hashes for
update logic. By setting explicit file version and language, the version
will always be used to determine which version is newer on updates.
Signed-off-by: Simon Rozman <simon@rozman.si>
Adopt PROCESSOR_ARCHITECTURE environment variable platform designation,
make it lowercase, and unify output folder naming.
Signed-off-by: Simon Rozman <simon@rozman.si>
