ac4c695ad6
Several important base system components are written in C++, and the WITHOUT_CXX option produced a system that was not fully functional. Just accept this, and remove the option to build without C++ support. This reverts commit adc3c128c6603054586a993d117e5dd808deac17. Reviewed by: brooks, kevans, jhb (earlier) Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D33108