Changings in AnisotropicMatrixes3D: eigenvectors corresponding zeros eigenvalues are filled by hands. It provides passing NumericalFuzzRandom TEST.
gsl_decomposition TEST was removed because of changings in AnisotropicMatrixes3D structure.
A bit changed material description in task file
Introducing mutable and immutable rheology matrices. Implemented
isotropic and anisotropic matrices using immutable rheology matrix.
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/libgcm/util/AnisotropicMatrix3D.h
Add .refresh() call, fix unit tests for anisotropic matrixes
Fix memmory leak in AnisotropicMatrix3D
Naive tests for analytical vs numerical matrixes for anisotropic materials
Merge remote-tracking branch 'akazakov/master'
	new file:   Makefile
	modified:   src/libgcm/util/AnisotropicMatrix3DAnalytical.cpp
	modified:   src/libgcm/util/ThirdDegreePolynomial.cpp
	modified:   src/libgcm/util/ThirdDegreePolynomial.h
	modified:   src/tests/unit/anisotropic_matrixes.cpp

	deleted:    Makefile~