libvb: make Polynomial and RationalFraction templates
libvb: saner output for cpx, polynomials, constellations
libvb/Constellation: make it displayable
libvb/Constellation: use long doubles for better precision
libvb/Constellation: make it a template to open for multiprecision
Spring cleaning for gcc 4.9 (suppress warnings)
libvb/Constellation: make the templatization better (to allow float128)
libvb/Polynomial: decreasing loops with unsigned indices are awkward
Enable the necessary support for quadmath and float128