$NetBSD: patch-src_contrib_build-contrib.xml,v 1.2 2017/09/06 11:12:20 fhajny Exp $

Don't look for a specific Ivy version.
Add Ivy resolver tasks to let us forbid fetch on demand.

--- src/contrib/build-contrib.xml.orig	2017-03-23 10:14:59.000000000 +0000
+++ src/contrib/build-contrib.xml
@@ -41,7 +41,7 @@
 
   <property name="build.encoding" value="ISO-8859-1"/>
 
-  <property name="ivy.version" value="2.4.0"/>
+  <property name="ivy.version" value="0.0.0"/>
   <property name="ivy.url"
             value="https://repo1.maven.org/maven2/org/apache/ivy/ivy" />
   <property name="ivy.home" value="${user.home}/.ant" />
@@ -233,6 +233,8 @@
   </target>
 
   <target name="ivy-retrieve" depends="init,ivy-init">
+    <ivy:resolve settingsRef="${ant.project.name}" conf="default"
+                 useCacheOnly="true"/>
     <ivy:retrieve settingsRef="${ant.project.name}" type="jar" conf="default"
                   pattern="${ivy.lib}/[artifact]-[revision].[ext]"/>
     <ivy:retrieve settingsRef="${ant.project.name}" type="bundle" conf="default"
@@ -240,6 +242,8 @@
   </target>
 
   <target name="ivy-retrieve-test" depends="init,ivy-init">
+    <ivy:resolve settingsRef="${ant.project.name}" conf="test"
+                 useCacheOnly="true"/>
     <ivy:retrieve settingsRef="${ant.project.name}" type="jar" conf="test"
                   pattern="${ivy.test.lib}/[artifact]-[revision].[ext]"/>
   </target>