suggestion: use PVRTexLib for pvr image codec

[oiram]

Hi guys,
We know that imgtec have the "PVRTC" and its format's explain. imgtec just release 2.10 sdk, and give us new PVR2 and file format, the old format which called PVR1 is legacy now.
And the PVRTC image codec in ogre just use the old "PVRTCTexHeader" to analyze PVRTC file, that means ogre cannot read the new pvr image file.

PVRTexLib is easy to use, so I suggest to add PVRTexLib into ogre dependencies for PVRTC with OpenGL ES2 rendersystem.
What do you think?

[masterfalcon]

There are a couple possible issues. First, testing the new format. I don't know of any devices that support it yet. Second, licensing, which we'd have to investigate.