packages with build dependencies on openjdk-6-jdk

[Matthias Klose <doko@cs.tu-berlin.de>]

Unfortunately there is a lot of packages with build dependencies on
openjdk-6-jdk directly, which is a bit unfortunate. Most likely all
packages build depending on openjdk-6-jdk should have RC bug reports
because they may contain 1.6 bytecode. The following should be checked
for the release:

 - if a package build-depends on openjdk-6-jdk or cacao-oj6-jdk,
   it should be compiled with `-target 1.4' (or 1.5?).

 - if no target option is used, it should only depend on 
   java-runtime6 or java-runtime6-headless.

 - build dependencies should be of the form openjdk-6-jdk |
   cacao-oj6-jdk, or else builds will fail on s390.

Matthias