WARNING: with makefiles I could not get a stable blender compiled.

do a make clean in source/blender/ to be sure!

- Included the new shaders from Cessen... well, only the shader calls
  themselves. To make sure the shaders work I nicely integrated it

- MaterialButtons: layout changed a bit, but still resembles the old
  layout. The 'shader' options now are located together.

- Shaders are separated in 'diffuse' and 'specular'. You can combine them
  freely.

- diffuse Lambert: old shader
  diffuse Oren Nayar: new shader, gives sandy/silky/skinny material well
  diffuse Toon: for cartoon render

- specular Phong: new spec, traditional 70ies spec
  specular CookTorr: a reduced version of cook torrance shading, does
                     off specular peak well
  specular Blinn: new spec, same features as CookTorr, but with extra
                  'refraction' setting
  specular Toon: new spec for cartoon render

- default blender starts with settings that render compatible!

- works in shaded view and preview-render

- works in unified render

Further little changes:

- removed paranoia compile warnings from render/loader/blenlib

- and the warnings at files I worked at were removed.

source/blender/include/interface.h

@@ -110,7 +110,7 @@
 #define UI_BLOCK_BUSY		8
 #define UI_BLOCK_NUMSELECT	16
 #define UI_BLOCK_ENTER_OK	32
-#define UI_BLOCK_MENUMODE	128
+
 
 /* uiBlock->dt */
 #define UI_EMBOSSX		0	/* Rounded embossed button */