git-svn-id: https://geuz.org/svn/gmsh/trunk@19570 59c8cabf-10d6-4a28-b43f-3936b85956c4
Optimized patch creation in mesh optimizer

git-svn-id: https://geuz.org/svn/gmsh/trunk@19571 59c8cabf-10d6-4a28-b43f-3936b85956c4