Leverage split of cfs-posix and cfs-posix-dir by reusing cfs-posix for win32 and replacing only cfs-posix-dir with cfs-win32-dir.
Leverage split of cfs-posix and cfs-posix-dir by reusing cfs-posix for win32 and replacing only cfs-posix-dir with cfs-win32-dir.

MohamedSeliem/contiki,arurke/contiki,MohamedSeliem/contiki,bluerover/6lbr,arurke/contiki,MohamedSeliem/contiki,bluerover/6lbr,MohamedSeliem/contiki,MohamedSeliem/contiki,bluerover/6lbr,MohamedSeliem/contiki,bluerover/6lbr,bluerover/6lbr,arurke/contiki,arurke/contiki,MohamedSeliem/contiki,bluerover/6lbr,arurke/contiki,arurke/contiki,arurke/contiki,bluerover/6lbr