replaced the nehe base tga loader with an QImage base loader. (Now the Imrod in AssimpMesh example is now red instead of greenish :))
renamed TGALoader to TextureFromFileLoader because now we support any image format which QImage supports.
Converted each image file of the Imrod model to tiff(deflate compressed).
QImage supports tga files via an imageformat plugin but it couldn't load the Imrod_spec.tga file.