* genattr.c: Include stdarg.h/varargs.h.  Change function
        `fatal' to use variable arguments instead of faking it with
        integer parameters.  Provide a prototype which also
        checks the format specifiers using ATTRIBUTE_PRINTF_1.
        * genattrtab.c: Likewise.
        * gencodes.c: Likewise.
        * genconfig.c: Likewise.
        * genemit.c: Likewise.
        * genextract.c: Likewise.
        * genflags.c: Likewise.
        * genopinit.c: Likewise.
        * genpeep.c: Likewise.
        * genrecog.c: Likewise.
        * genoutput.c: Likewise.  Similarly for function `error'.

From-SVN: r19661