Revert "progs/redbook: Temporarily disable the demos that extensions not part of windows to fix build."

This reverts commit 1587eff1b6.

progs/redbook/SConscript

@@ -14,8 +14,8 @@ progs = [
     'checker',
     'clip',
     'colormat',
-    #'combiner',
-    #'convolution',
+    'combiner',
+    'convolution',
     'cube',
     'cubemap',
     'depthcue',
@@ -24,29 +24,29 @@ progs = [
     'drawf',
     'feedback',
     'fog',
-    #'fogcoord',
+    'fogcoord',
     'fogindex',
     'font',
     'hello',
-    #'histogram',
+    'histogram',
     'image',
     'light',
     'lines',
     'list',
     'material',
-    #'minmax',
+    'minmax',
     'mipmap',
     'model',
     'movelight',
     'multisamp',
-    #'multitex',
-    #'mvarray',
+    'multitex',
+    'mvarray',
     'nurbs',
     'pickdepth',
     'picksquare',
     'plane',
     'planet',
-    #'pointp',
+    'pointp',
     'polyoff',
     'polys',
     'quadric',
@@ -56,7 +56,7 @@ progs = [
     'scene',
     'sceneflat',
     'select',
-    #'shadowmap',
+    'shadowmap',
     'smooth',
     'stencil',
     'stroke',
@@ -71,7 +71,7 @@ progs = [
     'texprox',
     'texsub',
     'texturesurf',
-    #'texture3d',
+    'texture3d',
     'torus',
     'trim',
     'unproject',