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/preProcessing/createZeroDirectory/boundaryTemplates.C

@@ -28,8 +28,6 @@ License
 #include "IFstream.H"
 #include "StringStream.H"
 
-using namespace Foam;
-
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
 Foam::boundaryTemplates::boundaryTemplates