[boost] [type_traits] fixes for GCC 2.95

The following regressions in gcc-2.95.3-linux http://tinyurl.com/638l6 http://tinyurl.com/3k6hu are IMHO due to the fact that bad_alloc is defined in <new>, and this header is not included by the corresponding test programs. I'd say it's only out of sheer luck (dependant inclusions) that these tests works for the rest of compilers, but I might be wrong. In any case, #including <new> solves the problem. If noone sees a problem with these patches, I'll commit them. Joaquín M Lópz Muñoz Telefónica, Investigación y Desarrollo 16d15 < #include <new> 22d21 < #include <new>