535821: An internal error occurred during: "Marketplace Error Notification"

Import package org.apache.http.conn.routing explicitly

Bug: 535821
Task-Url: https://bugs.eclipse.org/bugs/show_bug.cgi?id=535821
diff --git a/org.eclipse.epp.mpc.core/META-INF/MANIFEST.MF b/org.eclipse.epp.mpc.core/META-INF/MANIFEST.MF
index c775d8d..7e9fb6a 100644
--- a/org.eclipse.epp.mpc.core/META-INF/MANIFEST.MF
+++ b/org.eclipse.epp.mpc.core/META-INF/MANIFEST.MF
@@ -34,6 +34,7 @@
  org.apache.http.config;version="4.4.0",
  org.apache.http.conn;version="4.5.2",
  org.apache.http.conn.params;version="4.5.2",
+ org.apache.http.conn.routing;version="4.5.2",
  org.apache.http.conn.socket;version="4.5.2",
  org.apache.http.conn.ssl;version="4.5.2",
  org.apache.http.entity;version="4.4.0",