update for chol: cholevsky factorization
adding comments in potrf and deleting the old now unused file
adding documentation to chol and correcting some indentation
cosmetic changes to chol.hpp
correcting small typo UTF8 coding pb
commenting potrf declaration and adding sub tests to chol
adding tests for sub and complex to chol
suppressing display from chol unit tests
polishing chol adding a raw_ case and making unit tests for all matrix or sub calls
adding complex unit tests for chol
adding a forgotten include in chol.hpp
don't forward-declare nt2::tag::cpu_, it's actually an alias for boost::dispatch::tag::cpu_
test for non definite matrices was erroneous in chol
Merge pull request #807 from jtlap/linalg_4_chol

Linalg 4 chol
symeig update using hsev
using swap_assert in symeig
after assign_swap correction adding it properly in symeig
suppressing DISPLAY and adding 'sub' tests
adding tests to symeig and correcting hsev
adding raw_ case to symeig and improving unit tests