- Also replace GL/glew by vtk_glew in Core/RenderDetail
- Remove empty first line in those

This module implements forward and backward Euler methods.

ENH: Add unit tests

ENH: Implement Newton's method. Used in the backward Euler method.

Add test for backward euler.

Fix MacOSX compilation error.

BUG: Make sure row major sparse containers are used
for all matrix computations.

Clean up interfaces, fix linking errors and transfer implementations
to cpp files.

Documents methods and variables. Clean solvers test.

Adding more documentation. Clean solver tests and interfaces.

Fix discrepancies in iterative solvers errors. Add more documentation.

Conflicts:
	Solvers/BackwardSOR.h
	Solvers/ForwardGaussSeidel.cpp

Documenting IO. Change name for IO delegates to match file name.

Capture by value in the IO delegator so that it remembers about the
delegate file name and IO pointer.

Fixing examples so they use the new IOs and renderer.

Add tests to IO. Move variables, types and implementation
of utility methods to IOMeshDelagates base class.

Commented out the VegaVoumetricMesh test until after I debug the meshIO.

Using Bandit as a unit test framework library.
Because of this I refactored most of the collision module, there are still issues.
Add unit tests for SpatialHash and OctreeCell. These are to show how
the testing framework is used and they can be improved.

issue #3

Add test spec for OctreeCell