emulation/43bsd patch

["David P. Reese Jr." <daver@xxxxxxxxxxxx>]

This patch creates an emulation/43bsd directory and moves the recently
modified compatibility syscalls there.  Any future work on the COMPAT_43
code should be split from the rest of the kernel and moved here.

http://gomerbud.com/daver/patches/dragonfly/emulation-43bsd.diff

If this patch gets positive feedback, I will commit the changes.

-- 
   David P. Reese, Jr.                                     daver@xxxxxxxxxxxx
                                               http://www.gomerbud.com/daver/