added static data boundBox::greatBox and boundBox::invertedBox

- boundBox::invertedBox is useful for initializing our own calculations
- NOTE treeBoundBox::greatBox is still in place, since it uses GREAT
  instead of VGREAT. If this is only historical, we can drop it.

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

@@ -109,7 +109,7 @@ Foam::label Foam::checkTopology
         {
             Info<< "    Number of regions: " << rs.nRegions() << " (OK)."
                 << endl;
-        
+
         }
         else
         {
@@ -214,7 +214,7 @@ Foam::label Foam::checkTopology
                 const pointField& pts = pp.points();
                 const labelList& mp = pp.meshPoints();
 
-                boundBox bb(vector::zero, vector::zero);
+                boundBox bb;   // zero-sized
                 if (returnReduce(mp.size(), sumOp<label>()) > 0)
                 {
                     bb.min() = pts[mp[0]];

applications/utilities/parallelProcessing/reconstructParMesh/reconstructParMesh.C

@@ -273,7 +273,7 @@ autoPtr<mapPolyMesh> mergeSharedPoints
         }
     }
 
-    return map;    
+    return map;
 }
 
 
@@ -418,11 +418,7 @@ int main(int argc, char *argv[])
     // Read point on individual processors to determine merge tolerance
     // (otherwise single cell domains might give problems)
 
-    boundBox bb
-    (
-        point(GREAT, GREAT, GREAT),
-        point(-GREAT, -GREAT, -GREAT)
-    );
+    boundBox bb = boundBox::invertedBox;
 
     for (label procI = 0; procI < nProcs; procI++)
     {