Add examples for hnormalized and homogenous (fix bug 846)
Optimization: "matrix<complex> * real" did not call the special path and the real was converted to a complex. Add respective unit test to avoid future regression.
Fix stableNorm() with respect to NaN and inf, and add respective unit tests. blueNorm() and hypotNorm() are broken wrt to NaN/inf
Fix blueNorm wrt NaN/INF.
Fix hypot() and hypotNorm() wrt NaN and INF values.
relax some LM unit tests
Remove LM::sqrt_() member function in favor of a shortcut for sqrt(epsilon())
Update reference value for testNistLanczos1 test