header file missing


git-svn-id: https://geuz.org/svn/gmsh/trunk@17662 59c8cabf-10d6-4a28-b43f-3936b85956c4
pp


git-svn-id: https://geuz.org/svn/gmsh/trunk@17663 59c8cabf-10d6-4a28-b43f-3936b85956c4