obsolete: gather all contents related to format version 0 in a single place
All contents includes documentation, constants, and functions, so we
gather all of those things into a single location. The diff is confusing
because it cannot understand what code is semantically moved around in this
grand migration.
<Include>
<?if $(var.Platform) = "x64" ?>
<?define IsX64 = yes ?>
<?else?>
<?define IsX64 = no ?>
<?endif?>
</Include>