XFEM: Fixed minor bug.
Added tolerance in Line :: computeNumberOfIntersectionPoints.
Module manager: corrected bounds on check in giveModule.
Started to implement PrescribedGradientBCWeak.
XFEM: Fixed error in EnrichmentItem :: computeIntersectionPoints.
XFEM: Fixed error in subdivision of cut elements.
XFEM: Started to implement enrichment front for crack intersections.
XFEM: Modified treatment of crack tips to allow different enrichment
fronts at the start and end tip of a crack.
XFEM: Added test case for intersecting cracks and updated input in a few other xfem tests.
XFEM: Corrected computation of local coordinates for cohesive Gauss
points when intersecting cracks are present.
XFEM: Continued implementation of support for crack intersections.
Merge branch 'master' of https://github.com/Micket/oofem

Conflicts:
	tests/sm/xfemMultipleCracks1.in
XFEM: Changed tolerance in the xfemMultipleCracks1 test case.
Cemhyd: fixed test cases (changed from time to time step).