Describe the bug
The prototype for the OS_ShellOutputToFile_Impl() function has gotten stale and needs an update. Unfortunately this isn't built as part of any regularly-run test routine.

To Reproduce
Change OSAL config to enable shell
Build on RTEMS

Expected behavior
Build should pass

Code snips

System observed on:
RTEMS 4.11.3 target, Ubuntu 20.04 host.

Reporter Info
Joseph Hickey, Vantage Systems, Inc.