Revision 13

-- Minor change of behaviour:

"etat0" does not compute "rugsrel" nor "radpas". Deleted arguments
"radpas" and "rugsrel" of "phyredem". Deleted argument "rugsrel" of
"phyetat0". "startphy.nc" does not contain the variable "RUGSREL". In
"physiq", "rugoro" is set to 0 if not "ok_orodr". The whole program
"etat0_lim" does not use "clesphys2".

-- Minor modification of input/output:

Created subroutine "read_clesphys2". Variables of "clesphys2" are read
in "read_clesphys2" instead of "conf_gcm". "printflag" does not print
variables of "clesphys2".

-- Should not change any result at run time:

References to module "numer_rec" instead of individual modules of
"Numer_rec_Lionel".

Deleted argument "clesphy0" of "calfis", "physiq", "conf_gcm",
"leapfrog", "phyetat0". Deleted variable "clesphy0" in
"gcm". "phyetat0" does not modify variables of "clesphys2".

The program unit "gcm" does not modify "itau_phy".

Added some "intent" attributes.

"regr11_lint" does not call "polint".