consistency update

- OSspecific: chmod() -> chMod(), even although it's not used anywhere

- ListOps get subset() and inplaceSubset() templated on BoolListType

- added UList<bool>::operator[](..) const specialization.
  Returns false (actually pTraits<bool>::zero) for out-of-range elements.
  This lets us use List<bool> with lazy evaluation and no noticeable
  change in performance.

- use rcIndex() and fcIndex() wherever possible.
  Could check if branching or modulus is faster for fcIndex().

- UList and FixedList get 'const T* cdata() const' and 'T* data()' members.
  Similar to the STL front() and std::string::data() methods, they return a
  pointer to the first element without needing to write '&myList[0]', recast
  begin() or violate const-ness.

applications/utilities/mesh/advanced/modifyMesh/cellSplitter.C

@@ -211,7 +211,7 @@ void Foam::cellSplitter::setRefinement
 
         // Add other pyramids
         for (label i = 1; i < cFaces.size(); i++)
-        {    
+        {
             label addedCellI =
                 meshMod.setAction
                 (
@@ -277,7 +277,7 @@ void Foam::cellSplitter::setRefinement
 
                 label index = findIndex(f0, e[0]);
 
-                bool edgeInFaceOrder = (f0[(index+1) % f0.size()] == e[1]);
+                bool edgeInFaceOrder = (f0[f0.fcIndex(index)] == e[1]);
 
                 // Check if cellI is the face owner
 
@@ -323,7 +323,7 @@ void Foam::cellSplitter::setRefinement
 
                 label index = findIndex(f1, e[0]);
 
-                bool edgeInFaceOrder = (f1[(index+1) % f1.size()] == e[1]);
+                bool edgeInFaceOrder = (f1[f1.fcIndex(index)] == e[1]);
 
                 // Check if cellI is the face owner
 
@@ -362,7 +362,7 @@ void Foam::cellSplitter::setRefinement
             }
         }
     }
-            
+
 
     //
     // Update all existing faces for split owner or neighbour.
@@ -441,7 +441,7 @@ void Foam::cellSplitter::setRefinement
 
                 label patchID, zoneID, zoneFlip;
                 getFaceInfo(faceI, patchID, zoneID, zoneFlip);
-                
+
                 meshMod.setAction
                 (
                     polyModifyFace
@@ -458,7 +458,7 @@ void Foam::cellSplitter::setRefinement
                     )
                 );
             }
-    
+
             faceUpToDate[faceI] = true;
         }
     }