Fixed bug #64142 (dval to lval different behavior on ppc64)

See discussion on internals
http://marc.info/?t=136042277700003&r=1&w=2
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  Fixed bug #64142 (dval to lval different behavior on ppc64)
NEWS
Merge branch 'PHP-5.5'

* PHP-5.5:
  NEWS
  Fixed bug #64142 (dval to lval different behavior on ppc64)