Revert "Update guava to 12.0"

This reverts commit b50bc73.

Author: cpw

Diff for: pom.xml

@@ -118,7 +118,7 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>12.0</version>
+            <version>10.0.1</version>
             <type>jar</type>
             <scope>compile</scope>
         </dependency>