SBL_Parent returns process id and node of parent process.
error = SBL_Parent(NodeId *parentNode, SBL_Squid *parentSquid)
OUT NodeId *parentNode: returns node of parent process.
OUT SBL_Squid *parentSquid: returns process id of parent process.
SBL_Parent returns node and process id of the caller's parent
This call is guaranteed to work only if the caller process has been started
with SBL_Spawn. In that case, the parent process
is the process that executed SBL_Spawn to create
SBL_Parent returns 0 on success or negative error code on failure.
Copyright (c) 1995,