Add CVE for #66386 (PHP 5.6.12 and 7.0.0)

Author: kaplanlior

ChangeLog-5.php

@@ -763,7 +763,7 @@
 <li>GD:
 <ul>
   <li><?php bugfix(53156); ?> (imagerectangle problem with point ordering).</li>
-  <li><?php bugfix(66387); ?> (Stack overflow with imagefilltoborder).</li>
+  <li><?php bugfix(66387); ?> (Stack overflow with imagefilltoborder). (CVE-2015-8874)</li>
   <li><?php bugfix(70102); ?> (imagecreatefromwebm() shifts colors).</li>
   <li><?php bugfix(66590); ?> (imagewebp() doesn't pad to even length).</li>
   <li><?php bugfix(66882); ?> (imagerotate by -90 degrees truncates image by 1px).</li>

ChangeLog-7.php

@@ -859,7 +859,7 @@
 <li>GD:
 <ul>
   <li><?php bugfix(53156); ?> (imagerectangle problem with point ordering).</li>
-  <li><?php bugfix(66387); ?> (Stack overflow with imagefilltoborder).</li>
+  <li><?php bugfix(66387); ?> (Stack overflow with imagefilltoborder). (CVE-2015-8874)</li>
   <li><?php bugfix(70102); ?> (imagecreatefromwebm() shifts colors).</li>
   <li><?php bugfix(66590); ?> (imagewebp() doesn't pad to even length).</li>
   <li><?php bugfix(66882); ?> (imagerotate by -90 degrees truncates image by 1px).</li>