add support for ppc64p7 arch (Power7 optimized)
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  add support for ppc64p7 arch (Power7 optimized)
Merge branch 'PHP-5.5'

* PHP-5.5:
  add support for ppc64p7 arch (Power7 optimized)