create directory used for generating extension point docu.
diff --git a/plugins/org.eclipse.objectteams.otdt.ui.help/buildDoc.xml b/plugins/org.eclipse.objectteams.otdt.ui.help/buildDoc.xml
index 40958ae..94ac394 100644
--- a/plugins/org.eclipse.objectteams.otdt.ui.help/buildDoc.xml
+++ b/plugins/org.eclipse.objectteams.otdt.ui.help/buildDoc.xml
@@ -18,6 +18,7 @@
</target>
<target name="convertSchemaToHtml" if="eclipse.running">
+ <mkdir dir="reference"/>
<property name="dest" value="reference/extension-points" />
<record name="${basedir}/otdtconvert.txt" action="start"/>
<echo message="recording schema conversion ... in ${basedir}/otdtconvert.txt"/>