increased default trust radius to constant value.
output of hebden and more-sorensen solvers now similar.
minor change to make it compile
Merge branch 'master' of https://github.com/shiozaki/BAGEL

# By Ryan Dave Reynolds (18) and Toru Shiozaki (6)
# Via Ryan Dave Reynolds (5) and Toru Shiozaki (1)
* 'master' of https://github.com/shiozaki/BAGEL: (24 commits)
  Minor
  change in the btas file
  this is gone in the BTAS source tree
  minore cleanup
  To avoid recalculation of J-1/2 for relativistic integrals
  Forgot this part
  Replacing -3 with nan for integral screening
  Timing bug fix in London integrals
  same change for London NAI
  Bug fix (caused by optimization)
  London integral optimization
  minor
  Test cases for Dirac--Fock--Gaunt with magnetic field
  Minor test code fix
  Test code for Gaunt integrals w/ magnetic field
  Common origin for MixedERIBatch / Gaunt interaction
  Tabulating finite nucleus parameters
  Activating Gaunt interaction with London orbitals.
  Friend class not needed here
  Threading and distributing small component 1-electron integrals
  ...