Use signed values since these can be used for negative values as well.
Use our own kill function in order to avoid kill(-1), and rework killing in check_children.

check_children now utilizes stop_child in order to kill child
processes in order to reuse the same logic used elsewhere.
Increase Shutdown timeout in exec app definition.
Merge branch 'master' into stop_child_fix
Use \r\n instead of \n for fprintf.
I didn't realize that the cmd decode was fetching the command name as well.  Fixed.
Merge branch 'manage' into stop_child_fix
Merge pull request #12 from davidw/stop_child_fix

Fix for broken stop_child