cpp key in argument in NEMO

[rblod]

In NEMO Makefile (fait_AA_make), change:
P_P := $(P_P:%=$(prefix)%)
to:
override P_P := $(P_P:%=$(prefix)%)
should work (only tested in forced mode from the command line).
For example, to compile ORCA2_LIM without sea-ice model:
gmake P_P=' key_trabbl_dif key_vectopt_loop key_vectopt_memory key_orca_r2 key_dynspg_flt key_diaeiv key_ldfslp key_traldf_c2d key_traldf_eiv key_dynldf_c3d key_dtatem key_dtasal key_tradmp key_trabbc key_zdftke key_zdfddm'

[aclsce]

Put cpp key as argument of gmake command for nemo compilation.
See correction [515]