ld:
        * emulparams/shelf.sh (STACK_ADDR): Don't define.
        (OTHER_SECTIONS): Define.
        * emulparams/shelf_nbsd.sh ((STACK_ADDR): Don't undef.
        (OTHER_SECTIONS): Undef.
newlib:
        * libc/sys/sh/crt0.S: Remove vestigial .section directive.
gcc:
        * config/sh/crt1.asm: remove _stack label definition
        and sentinel value.

From-SVN: r55011