a better petsc manager
added test for petsc manager (test_petsc) to the testsuite

- avoids copying of index arrays which is not needed for reading access
- fixes bug of invalid iterator on temporary copy (was my fault)

now Matrix types have their own files

can u try with this ?

now ScalUnknown is as cool as PhysVectUnknown and accepts general
vector expressions thanks to boost::

not operator= accepts Vector Expression(Aka expression template)
thanks to boost

Fixed wrong(size) Vector assignment in NavierStokesAleSolverPC

maxnorm -> norm_inf
l2norm  -> norm_2

added an adaptor for norm_inf to be passed to newton, picard ...

norm_inf_adaptor

added norm_1 and sum as new reductions operations

norm_1 computes, well, the norm 1 of the vector expression and sum the sum of the elements
of the Vector expression


see boost::numeric::ublas -> Vector Expression for more information

maxnorm is with norm_2 and maxnorm

now code should compile for g++ < 3.3.4
hopefully it will make gilles happy ;)

* ported all tests to new vector/matrices
* disabled darcy for now as it is still in reconstruction
* disabled compilation of test_fsi_*.  test_fsi is the new standard
  testsuite directory for FSI

* cleanup
 ** got rid of quite a few memory leaks by using boost::shared_ptr
 ** simplified code in a few places

* new vector/matrices for linear algebra
  ** use boost::numeric::ublas
  ** still need some work(cleanup) in tab.hpp and vecUnknown.hpp

* darcy: reworked the darcy solver (more work to be done)
  ** darcy solver factory
  ** now BC and diffusion definition externalized
  ** still need to get rid of postProcessXXX() functions

* translated comments to english

use boost::array for static array class

* enhanced documentation
(second part)

added tetra mesh of the wall for the darcy solver
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