Fixed bug #67024 - getimagesize should recognize BMP files with negative height
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  Fixed bug #67024 - getimagesize should recognize BMP files with negative height
Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  Fixed bug #67024 - getimagesize should recognize BMP files with negative height