Compilation system update with the help from Rolf Heilemann Myhre

In the previsous commit the physics modifications between cy48t1 and cy48t3
have been introduced in PHYEX but still using the cy48t1 pack.
This commit introduces new modifications (in arome/ext) to use the cy48t3 pack.
Results are different due to modifications introduced betwwen cy48t1 and cy48t3
in parts other than the physics.
So, a new reference is needed (modifications in check_commit_ial.sh, INSTALL_pack_ial.md).

mode_th_r_from_thl_rt_1?.F90 are suppressed and replaced
by a single th_r_from_thl_rt.func.h include file.

Move some codes from arome specific directory to the common one
Hack FCM to build a shared lib
Compilation of fiat through FCM

For GPU, ice4_nucleation cannot be put in an include file
as included subroutine must not contain local variables.

mesonh/micro/rain_ice.f90 -> mesonh/micro/rain_ice_old.f90
mesonh/micro/rain_ice_red.f90 -> mesonh/micro/rain_ice.f90
bugfix for the new condensation interface
interface harmonisation betwwen mesonh/micro/rain_ice_red.f90 and arome/micro/rain_ice.F90

Quentin 13/04/2022: bugfix infinite loop sedimentation init inner values of ZREMAINT (bug in mesonh only)

- lines too long
- missing & in ifdef REPRO48
- remove ,& in pointer association
- change of ASSOCIATE subroutine

Original code contained a bug (autoconversion ri->rs was not set
to 0 if ldsoft when ri content gets lower than the threshold).
Introducing REPRO48 in ice4_slow allows to suppress the one
introduced in compute_pdf to compensate.

Simpler array declaration
ITPL initialisation
Cp computed using rain

REPRO48 key added in aro_adjust
PA/PB size declaration changed in ice4_tendencies (to allow bound checking)

Small modifications in ice_adjust and condensation

CMICRO variable passed to turb
REPRO48/REPRO55 used (instead of #ifndef REK) in sedimentation_stat

PCOMPUTE/ZCOMPUTE replaced by logical array
Last where statement decorated with mnh_expand

Arrays declared with KPROMA size

Suppression of ZMASK (DO with IF tests)
Arrays declared with KPROMA size
WHERE statement decorated with mnh_expand directives

Suppression of ZMASK (DO with IF tests)
Arrays declared with KPROMA size
WHERE statement decorated with mnh_expand directives