NSH will now run files from the file system; Add logic to unload and clean-up after running a task from a file system; Extensions to builtin apps from Mike Smith

git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5529 42af7a65-404d-4744-a932-0658087f49c3

nuttx/libc/spawn/lib_ps.c

@@ -247,7 +247,7 @@ static int ps_exec(FAR pid_t *pidp, FAR const char *path,
 
 errout:
   sched_unlock();
-  return OK;
+  return ret;
 }
 
 /****************************************************************************