binutils-2.13.2.1 "as" incorrect operand sizes in .code16 mode on x86

[Mike Haertel]

In binutils-2.13.2.1, on x86 targets, in .code16 mode, "as" generates
incorrect operand sizes for moves to and from control registers.
Example:

    $ as --version
    GNU assembler 2.13.2.1
    Copyright 2002 Free Software Foundation, Inc.
    This program is free software; you may redistribute it under the terms of
    the GNU General Public License.  This program has absolutely no warranty.
    This assembler was configured for a target of `i386-unknown-freebsd4.8'.
    $ as -al
    .code16
    movl %eax, %cr0
    movl %cr0, %eax
    ^D
    GAS LISTING                     page 1


       1                    .code16
       2 0000 0F22C0        movl %eax,%cr0
       3 0003 0F20C0        movl %cr0,%eax


The opcodes should be 660F22C0 and 660F20C0 respectively.