addded an option to delaunay 3D



git-svn-id: https://geuz.org/svn/gmsh/trunk@17665 59c8cabf-10d6-4a28-b43f-3936b85956c4
oops



git-svn-id: https://geuz.org/svn/gmsh/trunk@17666 59c8cabf-10d6-4a28-b43f-3936b85956c4