i386.h (CPP_486_SPEC, [...]): New specs.

i386.h (CPP_486_SPEC, [...]): New specs.

        * i386/i386.h (CPP_486_SPEC, CPP_586_SPEC, CPP_686_SPEC): New specs.
        (CPP_CPU_DEFAULT_SPEC, CPP_CPU_SPEC): Use them.
        (EXTRA_SPECS): Support them.
        * gcc.c: Delete %[spec] support.
        (do_spec_1, case '('): Likewise.
        (do_spec_1, case '['): Call error.
        * i386/aix386ng.h, cygwin32.h, freebsd-elf.h, gas.h, isc.h,
        linux-aout.h, linux-oldld.h, linux.h, osfelf.h, osfrose.h, sco.h,
        sco4.h, sco4dbx.h, sco5.h, sol2.h, sysv3.h (CPP_SPEC): Delete
        %[cpp_cpu].

From-SVN: r21120