templater: add context.preload(t) to test if the specified template exists
I'm going to remove 'templ' from the resources dict because it is the only
resource that the caller can't provide. This also implies that putting
'templ' into the resources dict creates a reference cycle.
context.preload(t) will be used in place of templater.__contains__().
<?xml version="1.0" encoding="utf-8"?>
<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
<?include guids.wxi ?>
<?include defines.wxi ?>
<?define hg_po_langs =
da;de;el;fr;it;ja;pt_BR;ro;ru;sv;zh_CN;zh_TW
?>
<Fragment>
<DirectoryRef Id="INSTALLDIR">
<Directory Id="i18ndir" Name="i18n" FileSource="$(var.SourceDir)">
<Component Id="i18nFolder" Guid="$(var.i18nFolder.guid)" Win64='$(var.IsX64)'>
<File Name="hggettext" KeyPath="yes" />
<?foreach LANG in $(var.hg_po_langs) ?>
<File Id="hg.$(var.LANG).po"
Name="$(var.LANG).po"
/>
<?endforeach?>
</Component>
</Directory>
</DirectoryRef>
</Fragment>
</Wix>