Added basic static structural solver which can be made to support changing problem sizes more easily. Only direct load control supported yet.
Merge branch 'master' of github.com:Micket/oofem
Merge branch 'master' of https://github.com/Micket/oofem
sparsenonlinsystemnm.h: Added forward declaration of SparseLinearSystemNM.
XFEM: Added possibility to let enriched dofs inherit Dirichlet BCs from the node they are introduced in. This is activated by specifying inheritbc in the EnrichmentItem record.