Revert "Bug 402252 - move up to (near) M6 version of Orbit"

This reverts commit 1ca306a9c1ccc0395eaf85faeca8d88d47c8d7e3.
diff --git a/eclipse-platform-parent/pom.xml b/eclipse-platform-parent/pom.xml
index 8088efd..3b379fc 100644
--- a/eclipse-platform-parent/pom.xml
+++ b/eclipse-platform-parent/pom.xml
@@ -23,7 +23,7 @@
     <comparator.repo>http://download.eclipse.org/eclipse/updates/4.3-I-builds</comparator.repo>
     <tycho.version>0.17.0-SNAPSHOT</tycho.version>
     <tycho-extras.version>0.17.0-SNAPSHOT</tycho-extras.version>
-    <orbit-repo.url>http://download.eclipse.org/tools/orbit/downloads/drops/I20130304045055/repository/</orbit-repo.url>
+    <orbit-repo.url>http://download.eclipse.org/tools/orbit/downloads/drops/S20121207152029/repository/</orbit-repo.url>
     <jetty-repo.url>http://www.eclipse.org/external/jetty/updates/jetty-bundles-8.x/8.1.3.v20120522/</jetty-repo.url>
     <ecf-repo.url>http://download.eclipse.org/rt/ecf/int2/site.p2/</ecf-repo.url>
     <emf-repo.url>http://download.eclipse.org/modeling/emf/emf/updates/2.9milestones/base/S201212130932/</emf-repo.url>