integrate stlport with visual studio 2010

 as far i writting this article, stlport's last version is 5.2.1.
you will find this stlport is perfectly integrated with visual studio 2008.
but if you include stlport library in visual studio 2010, you get compile error.
stlport\stl\_cstdlib.h contains a redefinition of abs() that VS2010 doesn't need.
you can just comment this line to build successfully.