Added possibility of criterion on geometric entity for patch creation in mesh optimizer. Added possibility to exclude BL elements in mesh quality optimizer.

git-svn-id: https://geuz.org/svn/gmsh/trunk@19794 59c8cabf-10d6-4a28-b43f-3936b85956c4
Renamed some parameters for the mesh quality optimizer 

git-svn-id: https://geuz.org/svn/gmsh/trunk@19795 59c8cabf-10d6-4a28-b43f-3936b85956c4