remove unused variable from declarations list
relax two-loop Higgs tadpole test precision

The remaing size of the tadpoles depends a bit on the used fortran
compiler
ignore mass head M[] when decreasing index literals
decrease intex literals also for mixing matrices
define SUSY scale in terms of m_stop(1) and m_stop(2)

instead of m_sup(1) and m_sup(6) .  This new scale definition avoids
large logarithms in the Higgs mass prediction in case stop(1) and
stop(2) cannot be identified with sup(1) and sup(6), respectively.

This patch addresses Reviewer 1 comment A-2.
use definition of SUSY scale in terms of stop(1) * stop(2)

This addresses Reviewer 1 comment 2.