If a boundary recovery problem occurs, do no longer continue as the function…

See merge request !113

Cleanups and simplication of tetrahedron hot path

See merge request !131

revert sanity check - it causes an uncaught exception on benchmarks/occ/CylinderWithEmbeddedPoints.geo

... this needs to be investigated further !

Change to std::vector.  Rewrite cavity in terms of queue to remove requirement on invaliding iterators on push_back

- order -> ordering
- pp doc

Api anthony

See merge request !129

Buffer overflow

See merge request !130

- uniformize names of new api functions
- remove unnecessary args (dim, nbrIntegrationPoints, ...)
- cleanup ElementType::functions

- Add doc

Merge branch 'master' of http://gitlab.onelab.info/gmsh/gmsh