make depend

bug fix when using "rough algo" to create the mean plane: the normal
was computed with reserve orientation compared to the normal case.

don't optimize transfinite volumes!

trying to fix the transfinite volume bug introduced by the 'left' and
'alternate' transfinite surface changes made a while ago

fix stat print for pyramids

upgrade triangle to version 1.6

disable applyOptimizationPatterns for now

print 1D elts in unv format + fix 2nd order 1d elts in unv format

indent + cleanup messages (somewhat)

fix gcc warnings + disable BDS optimization for now (it leads to wrong
results with gcc 4; maybe we should have more intelligent tests in
configure or in the makefiles to enable/disable optimization depending
on which compiler is used)

make it possible to add second order vertices for a mesh read from
a file (without cad)

if the mesh is partitioned, save the partitions in the .msh file

add missing copyright headers

always save the surface elements in unv format (not just when the surface is
not part of the boundary of a volume)

make depend

moving all external code to contrib subdirectory

use it now with -partition N for N partitions
only works with tets and triangles
output should be added (useless for now)

with node ordering corresponding to positive orientation (volume).
Test implemented for 1st and 2nd order elements, but only 1st order hexas
have actually been tested!

simpler tetgen integration by Jozef Vesely

fix memory leak + missing depend