Added preliminary CMake buildsystem support, it can autogenerate projectfiles/makefiles etc. Including Mac OS X Xcode.

This provides a better maintainable alternative to jam/msvcgen

Extras/PhysicsInterface/Common/CMakeLists.txt

@@ -0,0 +1,10 @@
+INCLUDE_DIRECTORIES(
+${BULLET_PHYSICS_SOURCE_DIR}/LinearMath  ${BULLET_PHYSICS_SOURCE_DIR}/Extras/PhysicsInterface/Common }
+)
+	
+ADD_LIBRARY(PHYSICS_COMMON_INTERFACE
+	PHY_IMotionState.cpp
+	PHY_IPhysicsController.cpp
+	PHY_IPhysicsEnvironment.cpp
+	PHY_IVehicle.cpp
+)