[BUG T3D 1.0] Incorrect size of non square DDS textures

When i try to add a non-square dds texture to a gui control, i get weid result.

I think this change solve this

GFXTextureManager.cpp line 578

ret->mBitmapSize.set( dds->mHeight, dds->mWidth, 0 );

change to:

ret->mBitmapSize.set( dds->mWidth, dds->mHeight, 0 );