ENH: change argList get<> and getList<> from read<>, readList<>

- more consistent with dictionary method naming. The get<> or
  getList<> returns a value, doesn't read into a existing location.

applications/utilities/surface/surfacePointMerge/surfacePointMerge.C

@@ -65,7 +65,7 @@ int main(int argc, char *argv[])
     argList args(argc, argv);
 
     const fileName surfFileName = args[1];
-    const scalar   mergeTol = args.read<scalar>(2);
+    const scalar   mergeTol = args.get<scalar>(2);
     const fileName outFileName = args[3];
 
     const scalar scaling = args.lookupOrDefault<scalar>("scale", -1);