Bug#675495: Should not be released with Wheezy

[Moritz Muehlenhoff <jmm@debian.org>]

Package: openjdk-6
Severity: serious

Upstream support for Java 6 ends in November:
http://www.oracle.com/technetwork/java/javase/eol-135779.html

As such, we should not include it in Wheezy and fix up the 
rdepends to use openjdk-7 instead.

Especially, since openjdk is quite a burden to update even 
for a single package (huge size, weird upstream situation with 
bits of icectea mixed in).

An alternative would be to exclude it from security support
as we do for some web browsers, but that's a non-optimal 
solution IMHO.

Cheers,
        Moritz