mitsuba 0.6.0 upgrade script

data/schema/upgrade_0.6.0.xsl

@@ -0,0 +1,20 @@
+<?xml version='1.0' encoding='utf-8'?>
+
+<!-- Stylesheet to upgrade from Mitsuba version 0.4.x to 0.6.0 scenes -->
+
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0">
+    <xsl:output method="xml" indent="yes" encoding="utf-8"/>
+    <xsl:preserve-space elements="*"/>
+
+    <!-- Update the scene version -->
+    <xsl:template match="scene/@version">
+        <xsl:attribute name="version">0.6.0</xsl:attribute>
+    </xsl:template>
+
+    <!-- Default copy rule -->
+    <xsl:template match="@*|node()">
+        <xsl:copy>
+            <xsl:apply-templates select="@*|node()"/>
+        </xsl:copy>
+    </xsl:template>
+</xsl:stylesheet>