SAK-16029 upgrade Sakai to Spring 2.5.6
SAK-16029 upgrade Sakai to Spring 2.5.6

git-svn-id: 663088ded5def2f533e0afefcd57025a4c9430d9@64578 66ffb92e-73f9-0310-93c1-f5514f145a0a

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