Added some more system calls.

Moved errno to a separate file.

mach/m68k4/libsys/LIST

@@ -2,15 +2,20 @@ tail_mon.a
 exit.s
 _exit.s
 access.s
+acct.s
 alarm.s
 chdir.s
 chmod.s
+chown.s
 chroot.s
 close.s
 creat.s
+dup.s
+dup2.s
 execl.s
 execve.s
 fork.s
+ftime.s
 getegid.s
 getgid.s
 getpid.s
@@ -20,12 +25,16 @@ gtty.s
 ioctl.s
 kill.s
 link.s
+lock.s
 lseek.s
 mknod.s
 mount.s
 nice.s
 open.s
 pause.s
+pipe.s
+profil.s
+ptrace.s
 read.s
 setgid.s
 setuid.s
@@ -34,8 +43,10 @@ stime.s
 sync.s
 time.s
 times.s
+umask.s
 umount.s
 unlink.s
+utime.s
 write.s
 brk.s
 wait.s
@@ -43,3 +54,4 @@ fstat.s
 signal.s
 call.s
 cleanup.s
+errno.s