Added forward declarations of IO operators, see:

http://openfoam.cfd-online.com/cgi-bin/forum/show.cgi?126/10948

src/meshTools/cellDist/wallPoint/wallPoint.H

@@ -51,6 +51,12 @@ namespace Foam
 // Forward declaration of classes
 class polyPatch;
 class polyMesh;
+class wallPoint;
+
+// Forward declaration of friend functions and operators
+Ostream& operator<<(Ostream&, const wallPoint&);
+Istream& operator>>(Istream&, wallPoint&);
+
 
 /*---------------------------------------------------------------------------*\
                            Class wallPoint Declaration
@@ -78,12 +84,15 @@ class wallPoint
             const scalar tol
         );
 
+
 public:
+
     // Static data members
 
         //- initial point far away.
         static point greatPoint;
 
+
     // Constructors
 
         //- Construct null
@@ -102,6 +111,7 @@ public:
             const wallPoint&
         );
 
+
     // Member Functions
 
         // Access
@@ -184,11 +194,11 @@ public:
                 const scalar tol
             );
 
+
     // Member Operators
 
         // Needed for List IO
         inline bool operator==(const wallPoint&) const;
-
         inline bool operator!=(const wallPoint&) const;