[boost] [exception] ambiguities between boost::exception and std::exception

AMDG I'm getting errors like this from como (not in strict mode) "..\boost/exception/enable_error_info.hpp", line 45: error #266: "boost::exception_detail::error_info_injector<T>::exception [with T=boost::bad_weak_ptr]" is ambiguous return exception::_diagnostic_information(T::what()); ^ detected during instantiation of "const char *boost::exception_detail::error_info_injector<T>::diagnosti c_information() const [with T=boost::bad_weak_ptr]" Similar problems with sun. The attached patch resolves the problem. In Christ, Steven Watanabe