git-svn-id: https://geuz.org/svn/gmsh/trunk@19300 59c8cabf-10d6-4a28-b43f-3936b85956c4
git-svn-id: https://geuz.org/svn/gmsh/trunk@19301 59c8cabf-10d6-4a28-b43f-3936b85956c4
GroupOfElement from physical AND partition

git-svn-id: https://geuz.org/svn/gmsh/trunk@19302 59c8cabf-10d6-4a28-b43f-3936b85956c4
git-svn-id: https://geuz.org/svn/gmsh/trunk@19303 59c8cabf-10d6-4a28-b43f-3936b85956c4
git-svn-id: https://geuz.org/svn/gmsh/trunk@19304 59c8cabf-10d6-4a28-b43f-3936b85956c4