Change list from release notes:
* Synchronized bundled GD library with GD 2.0.23.
* Fixed a bug that prevented compilation of GD extensions against
FreeType 2.1.0-2.1.2.
* Fixed thread safety issue with informix connection id.
* Fixed incorrect resolving of relative paths by glob() in windows.
* Fixed mapping of Greek letters to html entities.
* Fixed a bug that caused an on shutdown crash when using PHP with Apache
2.0.49.
* Fixed a number of crashes inside pgsql, cpdf and gd extensions.
All in all this release fixes over 30 bugs that have been discovered
and resolved since the 4.3.6 release.
