Keep copy rather than reference to returned object.
Resolves bug report http://www.openfoam.org/mantisbt/view.php?id=1454
Improved test to avoid /0
Corrected calculation of iTp
Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1456
Removed applications/test/LduMatrix
Merge branch 'master' of https://github.com/OpenFOAM/OpenFOAM-2.3.x