added rump_sys_* system call APIs for _sched_{set,get}affinity
Merge branch 'rump_affinity' into djnz00
if RUMP_VIF_LINKSTR is defined, <sys/sockio.h> must be included
since SIOC{G,S}LINKSTR are needed
Merge branch 'fixed_virtif_missing_sockio_h' into djnz00