(class): Define as klass around real.h.
        (real_c_float): Not a template any longer; define MODE as a
        class static constant; use real_format elements for SIZE.
        Update uses of real_to_decimal and real_to_hexadecimal.
        (main): Change -g argument to use a format name.
        (mode_for_size): Remove.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@58226 138bc75d-0d04-0410-961f-82ee72b054a4