contrib/wix/defines.wxi

linelog: optimize replacelines

The optimization to avoid calling `annotate` inside `replacelines` is significant
for practical use patterns.

Before this patch:

  hg perflinelogedits
  ! wall 6.778478 comb 6.710000 user 6.700000 sys 0.010000 (best of 3)

After this patch:

  hg perflinelogedits
  ! wall 0.136573 comb 0.140000 user 0.130000 sys 0.010000 (best of 63)

Differential Revision: https://phab.mercurial-scm.org/D4150

<Include>

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

</Include>