Emacs should work with glibc 2.24 on ppc64

Emacs should work with glibc 2.24 on ppc64

This patch, backported from upstream by Aurelien Jarno
<aurel32@debian.org>, has been added:

  Port to glibc 2.24 (pre-release) + ppc64

  Inspired by a suggestion by Florian Weimer in:
  https://sourceware.org/ml/libc-alpha/2016-07/msg00425.html
  * configure.ac (HAVE_PERSONALITY_ADDR_NO_RANDOMIZE):
  Rename from HAVE_PERSONALITY_LINUX32, and check for
  ADDR_NO_RANDOMIZE (the crucial thing) instead of for LINUX32.
  All uses changed.
  * src/emacs.c (main) [HAVE_PERSONALITY_ADDR_NO_RANDOMIZE]:
  Use ADDR_NO_RANDOMIZE from personality.h rather than inventing the
  flag ourselves.  Just set that flag, rather than also setting the
  persona.  When doing it, avoid functions like putenv that may
  allocate memory.

Origin: backport, commit: e95b023163e96538b15f030b7176b7ec59cf86f5
Bug-Debian: http://bugs.debian.org/833727
Added-by: Rob Browning <rlb@defaultvalue.org>