faster getMeshElementIndex when no index cache is used (MSH3)


git-svn-id: https://geuz.org/svn/gmsh/trunk@16624 59c8cabf-10d6-4a28-b43f-3936b85956c4
adding partition and saveInterpMat option to PVIewData::writeMSH


git-svn-id: https://geuz.org/svn/gmsh/trunk@16625 59c8cabf-10d6-4a28-b43f-3936b85956c4