Hi Guys,

  Are there any objections to rebasing the zlib sources in the
  gdb-binutils repository to version 1.3.1 ?  (Patch attached).

  Apart from just the general good practice of using the latest released
  version of the sources, this is also in response to PR 33097 which
  reports that the current zlib sources do not build under MacOS.

Cheers
  Nick