[Patch] Don't make zlib unless enable-languages=java [corrected]

[Kelley Cook]

  >"Alexandre" == Alexandre Oliva <aoliva@redhat.com> writes:
  >
  >Alexandre> Perhaps we should give zlib the same treatment that we give
  >Alexandre> to fastjar in gcc/java/config-lang.in?
  >
  >That would be fine with me.
  >
  >Tom

[Last version had the diff reversed]

Here is a revised patch to do it just that way.

Bootstrapped under i686-pc-cygwin with --enable-languages=c,c++ and then
with --enable-languages=c,c++,java.

zlib/fastjar was only built with the latter.

Kelley Cook [no cvs write privledges]