Fixed problem with reduced vectors when the default implementation of
plane strain is used.
Added a patch from KC and made some small XFEM updates.
XFEM: Implemented computation of the BH-matrix in the XFEM element
interface.
Umat: implemented support for plane strain simulations with large
deformations. The umat-interface now expects P and dPdF as output when
large deformations are activated.
Umat: corrected Voigt renumbering for vectors.
XFEM: Implemented large deformation support for TrPlaneStress2dXFEM.
Merge branch 'master' of https://github.com/Micket/oofem

Conflicts:
	src/sm/abaqususermaterial.h
AbaqusUserMaterial: Fixed error from merge.