nseig (NonSymetricEigenvalues and revisited balance it uses. poly and rots call nseig
suppressing comments in nseig.cpp
all scalar version allow complex, but value declaration cannot be avoided
suppressing display in balance and nseig units and splitting files between commplex/real inputs
suppressing comment in geev_w.hpp as combine if not simply a tocomplex call
bad header guard in lapack_assert.hpp
suppressing uneeded includes and suppressing uneeded intermediate value
suppressing lapack_assert and replacing by lapack_verify and using it in balance and nseig
suppressing 2 params version of lapack_verify and updating nseig
Merge pull request #793 from jtlap/linalg_1_nseig

Revised nseig and balance
static extract/insert were missing for AVX
change default of NT2_EXTRA_WARNINGS to ON for GCC-like compilers
wrong swap on container_shared_ref