Merge branch 'PHP-5.6' into PHP-7.0

diff --cc NEWS
index acf58500a9e303e70ee979ffd7842e31ee9a5242,9fc658ec7b1e5ad43912a48ed9c6d251c0fad8bc..e3d92454df91e1ebf84fa29b6c794cbdc7a550c0
--- 1/NEWS
--- 2/NEWS
+++ b/NEWS
@@@ -13,10 -6,8 +13,11 @@@ PH
    . Fixed bug #73213 (Integer overflow in imageline() with antialiasing). (cmb)
    . Fixed bug #73272 (imagescale() is not affected by, but affects
      imagesetinterpolation()). (cmb)
+   . Fixed bug #73279 (Integer overflow in gdImageScaleBilinearPalette()). (cmb)
  
 +- phpdbg:
 +  . Properly allow for stdin input from a file. (Bob)
 +
  - Standard:
    . Fixed bug #73203 (passing additional_parameters causes mail to fail). (cmb)