DataEntry: Base the name of the coefficients sub-dicts on the entry name rather than the type name

This allows for more than one of these data types to be specified in a dictionary
Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1652

e.g.
        <entryName> csvFile;
        <entryName>Coeffs
        {
            nHeaderLine         4;
            refColumn           0;          // reference column index
            componentColumns    (1 2 3);    // component column indices
            separator           ",";        // optional (defaults to ",")
            mergeSeparators     no;         // merge multiple separators
            fileName            "fileXYZ";  // name of csv data file
            outOfBounds         clamp;      // optional out-of-bounds handling
            interpolationScheme linear;     // optional interpolation scheme
        }

src/OpenFOAM/primitives/functions/DataEntry/TableFile/TableFileIO.C

@@ -53,7 +53,7 @@ void Foam::TableFile<Type>::writeData(Ostream& os) const
     DataEntry<Type>::writeData(os);
 
     os  << token::END_STATEMENT << nl
-        << indent << word(type() + "Coeffs") << nl
+        << indent << word(this->name() + "Coeffs") << nl
         << indent << token::BEGIN_BLOCK << nl << incrIndent;
 
     // Note: for TableBase write the dictionary entries it needs but not