windows fixes for c++ 11
added initialization of prol
removed initialization of prol
removed h1 fixed order elements
removed unistd header
removed unused variable e
removed visual studio incompatible c++ 11 features
removed NGS_DLL_HEADER for FacetVolumeFiniteElement
removed NGS_DLL_HEADER from class H1HighOrderFE_Shape
added exported constructor to FE_Segm1 and FE_Segm2
removed NGS_DLL_HEADER from class HCurlFiniteElement
fix for zero sized array
changed argument 1 of T_CalcShape to pointer type
removed GetDiagMassMatrix for L2HighOrderFE
removed "using typename BASE::T_IMPL;"
added NGS_DLL_HEADER to class LegendrePolynomial
removed some c++11 features incompatible with visual studio
removed NGS_DLL_HEADER from constructor of ScalarFiniteElement
windows fixes for zero sized arrays
added NGS_DLL_HEADER to virtual methods of T_ScalarFiniteElement