Moved stime, time, times POSIX calls from FS to PM. Removed child time

accounting from kernel (now in PM).  Large amount of files in this commit
is due to system time problems during development.

commands/ibm/readclock.c

@@ -186,7 +186,7 @@ PUBLIC int main(int argc, char **argv)
 
 void errmsg(char *s)
 {
-  static char *prompt = "settime: ";
+  static char *prompt = "readclock: ";
 
   fprintf(stderr, "%s%s\n", prompt, s);
   prompt = "";