- If it does, check whether it's behaviour is consistent with our implementation
- If behaviour is consistent: use the system's implementation
- If not, rename our implementation (to prevent symbol clashes) and use our own
git-svn-id: svn+ssh://svn.gna.org/svn/warzone/trunk@6556 4a71c877-e1ca-e34f-864e-861f7616d084