Addes tests for GML file writing and reading
deleted temp files
Addes tests for GML file writing and reading
Bug fix for inserting point at pos zero.
deleted temp files
If vec to sort is empty do not access first elem.
Merge branch 'GMLTest' of github.com:rinkk/ogs into GMLTest

Conflicts:
	Tests/BaseLib/TestQuicksort.cpp
Merge pull request #116 from rinkk/GMLTest

GML test
Added GocadSGridReader programme to CMakeLists.txt
Added '#include <string>'.
Used MeshLib::Node instead of double coordinates.
Initial commit for GocadSGridReader.
Small changes for compilation with OGS-6.
Using Polyline::getPoint() for accessing polyline data.
Added simple program to convert OGS meshes into vtk format.
Removed tool ConvertGliToVtk.
Added namespace qualifier MathLib and including Vector3.h.
Added three methods to class GocadSGridReader.

Added getElements() (public), readElementPropertiesBinary() and createElements() (private).
Added a vector for the created mesh elements.
Corrected a bug in operator() of private class IndexCalculator.
Added logog to GocadSGridReaderMain.cpp and using new functionality of class GocadSGridReader.
Added logog output.