Hi Guix,

attached is a patch that gives us the liberated OpenJDK in the form of
IcedTea (version 6).  IcedTea 6 is built with GCJ.  Unfortunately, it
needs Ant, which cannot be built with GCJ, so it depends on a binary
bootstrap Ant.

There are a couple of issues with this patch set that I'm aware of:

* IcedTea 6 is built without JavaScript support as this would require
  Rhino.

* I'm not happy with replacing the unpack phase and I don't like to
  refer to the OpenJDK source tarball by its full name
  "openjdk-6-src-b34-20_jan_2015.tar.xz".  Is there a way around this?

* The test suite has been disabled.  I have been able to fix most issues
  relating to the build environment (mostly hardcoded paths and
  corrupted PATH variable), but even then many tests fail.  One group of
  tests depends on a shell wrapper around Xvfb, which is currently not
  part of the xorg-server package.  A considerable number of tests fails
  upstream (see http://builder.classpath.org/icedtea/icedtea6/test/ for
  logs).

* All this patching of tests is really not pretty.  I'm not sure if
  there's a better or more concise way to achieve this.  I also don't
  know which of these steps should better be implemented as snippets.

* The patch to
  openjdk/jdk/src/share/classes/java/util/CurrencyData.properties
  really should be implemented upstream.

* the make check-* targets do not return a non-zero status code upon
  failure.  This doesn't affect us now because tests are disabled
  anyway, but using (and (zero? ...)) is just wishful thinking.

* the synopsis tells us about IcedTea (the build harness), but actually
  what we get after the build is a liberated OpenJDK.  The same problem
  affects the description, which probably should describe the purpose of
  OpenJDK instead.

I would be happy to receive comments on the above issues (or others that
you find with the patch).

~~ Ricardo