[boost] [config and function] Patch to use typeinfo macro

Hi, Both Sun and Pgi on Linux correctly put typeinfo into the std namespace, but function_base keys off the BOOST_NO_EXCEPTION_STD_NAMESPACE macro instead of the BOOST_NO_STD_TYPEINFO macro. The attached patch changes function_base to use the typeinfo macro. Because eVC 4.2 doesn't put typeinfo into the std namespace, I need to define BOOST_NO_STD_TYPEINFO only for this eVC version. Are these okay to commit? -- Noel