ENH: change wordRes to be a List of wordRe instead of a wrapper (issue #259)

- this permits direct storage of a list with additional matcher
  capabilities

- provide wordRes::matcher class for similar behaviour as previously

applications/utilities/mesh/generation/snappyHexMesh/snappyHexMesh.C

@@ -1666,7 +1666,7 @@ int main(int argc, char *argv[])
         {
             includePatches = bMesh.patchSet
             (
-                wordReList(args.lookup("patches")())
+                args.readList<wordRe>("patches")
             );
         }
         else