basic fsh prototype (no comments yet)
*** 243,252 **** --- 243,254 ---- filio.h \ flock.h \ flock_impl.h \ fork.h \ fsd.h \ + fsh.h \ + fsh_impl.h \ fss.h \ fsspriocntl.h \ fsid.h \ fssnap.h \ fssnap_if.h \