contrib/wix/defines.wxi

shelve: introduce secret option for using fixed date for temporary commit

Using a fixed date makes hashes stable and makes debugging simpler. The date
and hashes of this changeset are normally not exposed.

<Include>

  <?if $(var.Platform) = "x64" ?>
    <?define IsX64 = yes ?>
  <?else?>
    <?define IsX64 = no ?>
  <?endif?>

</Include>