git-svn-id: https://geuz.org/svn/gmsh/trunk@17140 59c8cabf-10d6-4a28-b43f-3936b85956c4
Petsc and Slepc works again

git-svn-id: https://geuz.org/svn/gmsh/trunk@17141 59c8cabf-10d6-4a28-b43f-3936b85956c4