GPU-Z 0.5.2

* Added support for NVIDIA GT 440, GTX 550, GTX 560, GTX 570, GTX 590
* Added support for AMD HD 6990
* Added detection support for more Sandy Bridge IGPs
* Fixed ROP count on ATI Madison
* Improved OpenCL detection for ATI
* Added CHL8228 voltage controller support for Cayman Pro and XT
* Improved driver based voltage monitoring support for ATI cards
* Added startup parameter /card followed by the adapter index, starts with 1.
* Several crash and stability fixes