Electron, Hadron, JPSI and LMVM setups use new coordinate system, each dectector is written
with reference to the centre of the magnet, instead of the old target position.

Old setup_sis100_[electron,hadron,jpsi,hadron.C renamed to
setup_sis100_[electron,hadron,jpsi,hadron]_APR21.C with the intenstion that they
will be deleted in the near future.

Candidate default geometries for the DEC21 SW release are available at setup_sis100_electron_DEC21.C
and similarily for other setups.

long_sts setup is removed from setup directory.