updated to jdk-7u6 and jedit_build-20120813 -- NB: plain Isabelle/Scala still happens to work with jdk-6;
#contributed components
contrib/cvc3-2.4.1
contrib/e-1.5
contrib/hol-light-bundle-0.5-126
contrib/kodkodi-1.2.16
contrib/spass-3.8ds
contrib/vampire-1.0
contrib/yices-1.0.28
contrib/z3-4.0
contrib/jdk-7u6
contrib/scala-2.9.2
contrib/jedit_build-20120813