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

src/sampling/sampledSet/patchCloud/patchCloudSet.C

@@ -314,10 +314,4 @@ Foam::patchCloudSet::patchCloudSet
 }
 
 
-// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
-
-Foam::patchCloudSet::~patchCloudSet()
-{}
-
-
 // ************************************************************************* //