new class and test for evaluation of stresses
bug in the example for saving and modifications to the new test
fixed a bug in the save
few changes
added the WallEstimatorData
added methods
removed ugly temporary files
added new headers and test folder in the CMakeList files
Merge branch 'TimeAdvanceFSI' into 20121804_ComputationStresses

Conflicts:
	lifev/fsi/examples/example_SmoothAneurysm/main.cpp
changes after the update with respect TimeAdvance and compilation
I have been too fast before and added not useful files. Ops!
added computations eigenvalues and tensors plus the library compiles and links
added the saving of the principal stresses
fixed some type error and therefore the compilation
the computation of P is complete for all the laws and it compiles.
Time to test now!
fixed some bugs and runtime errors
still memory managment problem
fixing all the runtime errors I have been having.
Let's look for numerical error now
bugs in the exporters
cosmetic changes