If we run a job from a restart snapshot and modify some of the
parameters in the parameter file, this could lead to problems. Some
parameters, like the set of equations, equation of state, or block
dimensions, simply cannot be modified. Therefore, any such parameter,
modifies in the parameter file, should be overwritten with the value
from the restart snapshot. The purpose of these subroutines is to read
these parameters from restart snapshots.
Signed-off-by: Grzegorz Kowal <grzegorz@amuncode.org>