ENH: more consistent use of broadcast, combineReduce etc.

- broadcast           : (replaces scatter)
  - combineReduce       == combineGather + broadcast
  - listCombineReduce   == listCombineGather + broadcast
  - mapCombineReduce    == mapCombineGather + broadcast
  - allGatherList       == gatherList + scatterList

  Before settling on a more consistent naming convention,
  some intermediate namings were used in OpenFOAM-v2206:

    - combineReduce       (2206: combineAllGather)
    - listCombineReduce   (2206: listCombineAllGather)
    - mapCombineReduce    (2206: mapCombineAllGather)

applications/utilities/mesh/manipulation/checkMesh/checkTopology.C

@@ -588,11 +588,7 @@ Foam::label Foam::checkTopology
                     }
                 }
 
-                Pstream::listCombineAllGather
-                (
-                    regionDisconnected,
-                    andEqOp<bool>()
-                );
+                Pstream::listCombineReduce(regionDisconnected, andEqOp<bool>());
             }
 
 

applications/utilities/mesh/manipulation/createPatch/createPatch.C

@@ -714,7 +714,7 @@ void syncPoints
         }
 
         // Combine - globally consistent
-        Pstream::listCombineAllGather(sharedPts, cop);
+        Pstream::listCombineReduce(sharedPts, cop);
 
         // Now we will all have the same information. Merge it back with
         // my local information.

applications/utilities/mesh/manipulation/splitMeshRegions/splitMeshRegions.C

@@ -1114,7 +1114,7 @@ label findCorrespondingRegion
         }
     }
 
-    Pstream::listCombineAllGather(cellsInZone, plusEqOp<label>());
+    Pstream::listCombineReduce(cellsInZone, plusEqOp<label>());
 
     // Pick region with largest overlap of zoneI
     label regionI = findMax(cellsInZone);