Add new Singapore supernode!
A few little fixes in NodeConfig.
Fix for GitHub issue #37: remember *nix device names.
Possible bug fix in Topology, have to test...
Build fix on Linux with G++.
VERSION 0.6.14: bug fixes, Unix device persistence

This version adds persistence of *nix device names (where possible), and fixes
a possible crash in Topology.cpp that was introduced in a previous revision.

It also adds a new supernode located in Singapore!