Common dynamics: Updates and modifications to enable running Mars physics with
LMDZ.COMMON dynamics:
For compilation: adapted makelmdz, create_make_gcm and makelmdz_fcm, bld.cfg
to compile aeronomy routines in "aerono$physique" if it exists,
and added "-P -traditional" preprocessing flags in "arch-linux-ifort*"
Added function "cbrt.F" (cubic root) in 'bibio'
Adapted the reading/writing of dynamics (re)start.nc files for Mars. The main
issue is that different information (on time, reference and current) is
stored and used differently, hence a few if (planet_type =="mars") here and
there. Moreover in the martian case there is the possibility to store fields
over multiple times.
Some Mars-specific variables (ecritphy,ecritstart,timestart) added in
control_mod.F and (hour_ini) in temps.h