Update SLF4J version 1.6.3->1.6.4
Update SLF4J version 1.6.3->1.6.4

git-svn-id: 6e8fd28f780afabc6e204acf2a9c9d65585dc8ff@25521 f5dbab47-78f9-eb45-b975-e544023573eb

doodelicious/resource-server,Jasig/resource-server,doodelicious/resource-server,doodelicious/resource-server,doodelicious/resource-server,Jasig/resource-server,Jasig/resource-server,Jasig/resource-server