Seperates the last node (the child) in a node name consisting of several nodes (the parent). For example, for a node name given as /group1/group2/group3, this function will set /group1/group2 as the parent and group3 as the child.
Arguments:
node: The node under scrutiny.
parent: A string to hold the parent's node name.
child: A string to hold the child's node name.
Returns 1 if successful and 0 otherwise.