Refactor|libhexen: Switched m_cheat.c to C++, cleanup
Refactor|libdoom64: Switched m_cheat.c to C++, cleanup
Refactor|libhexen: Switched p_spec.c to C++
Refactor|libcommon: Switched g_update.c to C++
Refactor|libdoom: Switched wi_stuff.c to C++