Fix small issues in tail and gf

  modified:   triqs/gf/block.hpp
  modified:   triqs/gf/imfreq.hpp
  modified:   triqs/gf/imtime.hpp
  modified:   triqs/gf/local/tail.hpp
  modified:   triqs/gf/refreq.hpp
  modified:   triqs/gf/retime.hpp
Fix det_manip for some details

  modified:   triqs/det_manip/det_manip.hpp
Remove blitz from ctqmc_hyb solver

Wrote an improved version of the triqs det_manip. Took away
pretty much all the blitz. Tests pass.

  modified:   applications/impurity_solvers/ctqmc_hyb/Configuration.cpp
  modified:   applications/impurity_solvers/ctqmc_hyb/Configuration.hpp
  modified:   applications/impurity_solvers/ctqmc_hyb/Hloc.cpp
  modified:   applications/impurity_solvers/ctqmc_hyb/Hloc.hpp
  modified:   applications/impurity_solvers/ctqmc_hyb/MC.cpp
  modified:   applications/impurity_solvers/ctqmc_hyb/Measures_Legendre_allseries.hpp
  modified:   applications/impurity_solvers/ctqmc_hyb/Move_AuxiliaryFunctions.hpp
  modified:   applications/impurity_solvers/ctqmc_hyb/Move_Global.hpp
  modified:   applications/impurity_solvers/ctqmc_hyb/Move_Insert_Remove_Cdag_C_Delta.hpp
  modified:   applications/impurity_solvers/ctqmc_hyb/Move_Insert_Remove_Cdag_C_Delta_SegmentPicture.hpp
  modified:   applications/impurity_solvers/ctqmc_hyb/Move_Move_CC_Delta.hpp
  modified:   applications/impurity_solvers/ctqmc_hyb/SmallMatrix.hpp
  modified:   applications/impurity_solvers/ctqmc_hyb/myConstIteratorVector.hpp
  modified:   applications/impurity_solvers/ctqmc_hyb/detManip.hpp
  deleted:    applications/impurity_solvers/ctqmc_hyb/det_manip_tester.hpp
Remove BUILD_NEW_GF option

  modified:   pytriqs/base/CMakeLists.txt
Add Legendre Green's functions

  modified:   pytriqs/base/gf/local/__init__.py
  modified:   pytriqs/base/gf/local/gf.pxd
  modified:   pytriqs/base/gf/local/gf.pyx
  modified:   pytriqs/base/gf/local/gf_legendre.py
  modified:   triqs/gf/block.hpp
  modified:   triqs/gf/meshes/discrete.hpp
  new file:   pytriqs/base/gf/local/legendre.pxd
  new file:   pytriqs/base/gf/local/legendre.pyx
  new file:   pytriqs/base/gf/local/mesh_legendre.pyx
  new file:   pytriqs/base/gf/local/nothing.py
  new file:   triqs/gf/legendre.hpp
  new file:   triqs/gf/domains/legendre.hpp