Update the build to use Corundum

Corundum is an extensible end-to-end build system for Eclipse plugins
based on Ant, p2 and PDE Build. It is an evolution of the build system
previously used for Sapphire.
diff --git a/releng.new/releng/site.xml b/releng.new/releng/site.xml
new file mode 100644
index 0000000..c8e0821
--- /dev/null
+++ b/releng.new/releng/site.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<site>
+   <feature url="features/org.eclipse.datatools.sdk.feature_##version##.jar" id="org.eclipse.datatools.sdk.feature" version="##version##">
+      <category name="org.eclipse.datatools"/>
+   </feature>
+   <feature url="features/org.eclipse.datatools.enablement.sdk.feature_##version.jar" id="org.eclipse.datatools.enablement.sdk.feature" version="##version##">
+      <category name="org.eclipse.datatools"/>
+   </feature>
+   <category-def name="org.eclipse.datatools" label="Eclipse Data Tools">
+      <description>
+         Tools for working with databases in Eclipse.
+      </description>
+   </category-def>
+</site>