updated demos -> ALT + mouse uses Maya-style controls, replaced BMF_Fonts by GLDebugFont

fix debug drawing of btMultiSphereShape
added box2d demo
added experimental gpu 2d demo

Demos/ConvexDecompositionDemo/ConvexDecompositionDemo.cpp

@@ -34,7 +34,7 @@ subject to the following restrictions:
 
 
 
-#include "BMF_Api.h"
+#include "GLDebugFont.h"
 #include <stdio.h> //printf debugging
 
 
@@ -55,6 +55,13 @@ btVector3   convexDecompositionObjectOffset(10,0,0);
 unsigned int tcount = 0;
 
 
+void ConvexDecompositionDemo::initPhysics()
+{
+	initPhysics("file.obj");
+}
+
+
+
 
 void ConvexDecompositionDemo::initPhysics(const char* filename)
 {