PR c++/16190

        * c-opts.c (c_common_handle_option): Don't include
        -Wnon-virtual-dtor in -Wall; enable if -Weffc++.
        * doc/invoke.texi (C++ Dialect Options): Document that
        -Wnon-virtual-dtor is no longer included in -Wall.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@110085 138bc75d-0d04-0410-961f-82ee72b054a4