Bug 516200: [codegen][tooling] Codegen popup menus are missing in Oxygen 

Xtext requires Guava [14.0.0,19.0.0) and MWE2 requires Guava [10.0.1,
19.0.0).

Change-Id: Ie1cb93d39f856b08525b4da6955d10edad4f0e15
Signed-off-by: Ernesto Posse <eposse@gmail.com>
diff --git a/content/setup/papyrus-rt-developer.setup b/content/setup/papyrus-rt-developer.setup
index b5fbe14..67d7b73 100644
--- a/content/setup/papyrus-rt-developer.setup
+++ b/content/setup/papyrus-rt-developer.setup
@@ -784,6 +784,9 @@
               name="org.eclipse.papyrus.designer.languages.cpp.library"/>
           <requirement
               name="org.eclipse.papyrus.designer.languages.common.base"/>
+          <requirement
+              name="com.google.guava"
+              versionRange="18.0.0"/>
         </targlet>
       </setupTask>
       <setupTask