[libgweather] build: Add named-timezone support to extract.xsl

[Piotr Drąg <piotrdrag src gnome org>]

commit 9f30cf65794eaf4de6abac9173695eafad6a3041
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Wed Dec 6 18:14:56 2017 +0100

    build: Add named-timezone support to extract.xsl

 po-locations/extract.xsl |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/po-locations/extract.xsl b/po-locations/extract.xsl
index 1c1d803..7776ab5 100644
--- a/po-locations/extract.xsl
+++ b/po-locations/extract.xsl
@@ -23,6 +23,11 @@ char *s = NC_("<xsl:call-template name="escape"><xsl:with-param name="string" se
 char *s = N_("<xsl:call-template name="escape"><xsl:with-param name="string" 
select="."/></xsl:call-template>");</xsl:otherwise></xsl:choose></xsl:template>
 
   <xsl:template match="gweather">
+      <!-- named-timezone names -->
+      <xsl:for-each select="//named-timezone/_name">
+       <xsl:sort select="."/>
+       <xsl:call-template name="output_name" /></xsl:for-each>
+
       <!-- region names -->
       <xsl:for-each select="//region/_name">
        <xsl:sort select="."/>