Splitting the Java policy from java-common

[Emmanuel Bourg <ebourg@apache.org>]

Hi all,

The src:java-common package currently contains:
- the default-jre/jdk meta packages defining the default Java per
architecture
- the update-java-alternatives mechanism
- the packaging policy for Java packages
- the Java FAQ

Including the Java policy in java-common is a bit odd, it means Java
users automatically gets the policy documents on their systems, but this
is only useful to people doing actual packaging work. I suggest moving
it to a separate java-policy package. The FAQ could also be moved later
to the wiki.

What do you think?

Emmanuel Bourg