refs #485 URL/URL list

* added constructor for CUrlList
* added registration of metadata of fail over class
* default port support for getPort

src/blackmisc/network/urllist.cpp

@@ -163,6 +163,10 @@ namespace BlackMisc
             CUrlList(other), m_maxTrials(maxTrials)
         { }
 
+        CFailoverUrlList::CFailoverUrlList(const CUrlList &urlIst) :
+            CUrlList(urlIst)
+        { }
+
         CUrlList CFailoverUrlList::getWithoutFailed() const
         {
             CUrlList urls(*this);