Merge branch 'PHP-5.6' into PHP-7.0

diff --cc NEWS
index 672aefb6453b4811b5fb8a7c59522a4e6941d68a,6fe4d5c78b0a1e1c26c6585aa80fbf75833d5481..5a01565a8559e1e3f1ab560be57585865d2531d7
--- 1/NEWS
--- 2/NEWS
+++ b/NEWS
@@@ -42,10 -33,9 +42,11 @@@ PH
    . Fixed bug #43828 (broken transparency of imagearc for truecolor in
      blendingmode). (cmb)
    . Fixed bug #66555 (Always false condition in ext/gd/libgd/gdkanji.c). (cmb)
+   . Fixed bug #68712 (suspicious if-else statements). (cmb)
  
  - Intl:
 +  . Fixed bug #72639 (Segfault when instantiating class that extends
 +    IntlCalendar and adds a property). (Laruence)
    . Partially fixed #72506 (idn_to_ascii for UTS #46 incorrect for long domain
      names). (cmb)