Overhaul of texture image handling.

1. gl_texture_image struct's Data pointer points to images in driver's format.
2. Added FetchTexel() function pointer to struct gl_texture_image.
3. Changed Driver Tex[Sub]Image functions, return void now.
4. Texture storage/fetch code in new texstore.c file.
5. Removed texture.[ch] - functions moved to state.c

Note: FX driver updates not finished yet.

src/mesa/main/texstate.c

@@ -1,4 +1,4 @@
-/* $Id: texstate.c,v 1.29 2001/01/29 20:47:39 keithw Exp $ */
+/* $Id: texstate.c,v 1.30 2001/02/06 21:42:48 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -37,7 +37,6 @@
 #include "texobj.h"
 #include "teximage.h"
 #include "texstate.h"
-#include "texture.h"
 #include "mtypes.h"
 #include "math/m_xform.h"
 #include "math/m_matrix.h"