The TemplateVector3 is derived from TemplatePoint<T,N>. There isn't a
constructor taking 3 values for TemplatePoint. Instead of this a std::array
is used to initialize the TemplatePoint data structures. For this reason
the TemplateVector3 constructor that is taking two points to initialize
the internal data needs an initializer list.

[MathLib] For better readability: scpr() -> scalarProduct().

Rename *.tpp and *.hpp to *-impl.h in BaseLib, MathLib and NumLib 

On Mac's Clang 3.3 and Windows Visual Studio a library can not be
empty. In NumLib there are at the moment only templates. dummy.cpp
can be removed later on.

Tiff and Geotiff CMake fixes

Renaming tpp files to -impl.h

Because of compile errors in FileTools.cpp (tested 1.46, 1.47)

Use ssh for submodules

Changed Hex edge numbering

add NumLib/CMakeLists.txt

MeshElemType2String