fix boost filesystem version

NetDb.cpp

@@ -169,7 +169,11 @@ namespace data
 				{
 					for (boost::filesystem::directory_iterator it1 (it->path ()); it1 != end; ++it1)
 					{
+#ifdef BOOST_VERSION > 10500
 						RouterInfo * r = new RouterInfo (it1->path().string().c_str ());
+#else
+						RouterInfo * r = new RouterInfo(it1->path().c_str());
+#endif
 						m_RouterInfos[r->GetIdentHash ()] = r;
 						numRouters++;
 					}