contrib/wix/defines.wxi

dispatch: add option to not strip command args parsed by _earlygetopt()

This allows us to parse the original args later by full-blown getopt() in
order to verify the result of the faulty early parsing. Still we need the
'strip=True' behavior for shell aliases.

Note that this series is RFC because it seems to change too much to be
included in stable release.

<Include>

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

</Include>