Changes to allow uClibc to build with updated (2.23) binutils.

2013-02-05  Simon Cook  <simon.cook@embecosm.com>

    * libc/string/arc/newlib/asm.h: Fix non-constant .size issue.
    * libc/sysdeps/linux/arc/bsd-setjmp.S: Likewise.
    * libc/sysdeps/linux/arc/crtn.S: Comment out .size to resolve
    above issue.