zzogl-pg:
* bump minimal requirement to  opengl 2! Basically any Dx9 class hardware. On intel you will need a gen4+ GPU.
* remove the bad quality integer texture to use only texture float. Again need an gen4+ Intel GPU. Opensource users: Mesa must be built with support of texture float (stupid patents)



git-svn-id: http://pcsx2.googlecode.com/svn/trunk@5603 96395faa-99c1-11dd-bbfe-3dabce05a288