pom.xml: updated Spring Framework to 3.1.0RC2

@see http://www.springsource.org/node/3317

No functional changes.

Author: php-coder

pom.xml

@@ -10,7 +10,7 @@
 	<packaging>war</packaging>
 
 	<properties>
-		<spring.version>3.1.0.RC1</spring.version>
+		<spring.version>3.1.0.RC2</spring.version>
 		<hibernate.version>3.6.8.Final</hibernate.version>
 		<lombok.version>0.10.2</lombok.version>
 		<mysql.connector.version>5.1.18</mysql.connector.version>