fixed nasty bug in quad meshing
added parameters to BL generation (2D)

high order smoother class added : high order meshes are guaranteed to be
valid : some elements are "un-curved" in order to ensure good value of
the distorsion mapping. P2 triangle quality estimate is robust

- fixed MED node ordering
- polished 64 bit Cocoa Mac OS X FLTK version
- updated copyright

order 7->9 seem to be wrong : the way shape functions are
computed is maybe numerically unstable
 

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- more work on slepc integration

* rewrite femTerm in terms of SElement

renamed most gmsh* classes