Changes the template class GaussAlgorithm to fulfill the interface of solvers of systems of linear equations.

Using the second parameter the user can give options
to solvers for systems of linear equations. The aim of
this commit is to fulfill the interface.

Changes in TestDenseGaussAlgorithm:
- Renaming execute() to solve() due to interface changes in GaussAlgorithm.
- Changed test tolerances to std::numeric_limits<float>::epsilon().
- Added test for GaussAlgorithm::solve(..., ...) and template argument DenseVector.

Conflicts:
	MathLib/LinAlg/Solvers/GaussAlgorithm.h
	MathLib/LinAlg/Solvers/GaussAlgorithm.tpp

Dmitri Naumov authored 11 years ago and Tom Fischer committed 11 years ago

Modify FP_TYPE* call too.

BugFix: Handle the case that only one geometry is selected correctly.

Rework on TestVector and add TestGlobalMatrixInterface

move finalizeMatrixAssembly() into namespace MathLib

Removed bug in MshLayerMapper::CreateLayers().

The bug occured in the case the mesh contains line elements.