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

LinearMath/CMakeLists.txt

@@ -0,0 +1,10 @@
+ADD_LIBRARY(LINEAR_MATH
+Geometry.cpp    
+Quat.cpp       
+Vector.cpp      
+quickprof.cpp
+Matrix.cpp      
+Scalar.cpp      
+VectorBase.cpp
+)
+