Fixed a bit of documentation for the Mesh.  Specifically, it does not contain a MeshRefinement or BoundaryMesh object, and the docs were changed to reflect that fact.
Fixed a bit of documentation for the Mesh.  Specifically,
it does not contain a MeshRefinement or BoundaryMesh object, and the
docs were changed to reflect that fact.


git-svn-id: ffc1bc5b3feaf8644044862cc38c386ade156493@491 434f946d-2f3d-0410-ba4c-cb9f52fb0dbf

certik/libmesh,certik/libmesh,certik/libmesh,certik/libmesh,certik/libmesh,certik/libmesh,certik/libmesh