ENH: reduce reliance on stringListOps functions

- findStrings, findMatchingStrings now mostly covered by matching
  intrinsics in wordRe and wordRes.

  Add static wordRes match() and matching() variants

COMP: remove stringListOps include from objectRegistry.H

- was already noted for removal (NOV-2018)

applications/utilities/surface/surfaceSplitByPatch/surfaceSplitByPatch.C

@@ -56,7 +56,7 @@ Usage
 
 #include "argList.H"
 #include "MeshedSurfaces.H"
-#include "stringListOps.H"
+#include "stringListOps.H"  // For stringListOps::findMatching()
 #include "geometricSurfacePatch.H"
 
 using namespace Foam;