Revisions of branch 2.2 worth being integrated into the trunk

[aducharne]

Please find below a list of committs in branch 2.2 (mostly by Agnès), which may be considered into the trunk, in chronological order:

1) r7264: Makes all keywords related to SPREAD_PREC include an A in spreAd, cf ticket #730, comment 5 and on. All forms with SPRED_PREC get deprecated. The file orchidee.default is adapted, and now includes info on SPREAD_PREC_SEC and SPREAD_PREC_CONT (only used by new driver). The configurations, however, have not yet been updated (done in r7421 with other changes).

2) r7339: Field capacity and wilting point are now calculated in slowproc_soilt, instead of being defined in constantes_soil_var for each texture class.

3) r7432: Changes to make the IMPOSE_SOILT mode functional. This mode is not anymore dependent on IMPOSE_VEG, as in the trunk so we can impose soil properties even when we read a vegetation map. New features compared to the trunk: 1) A new output variable is added to export "ksref" before being vertically modified; 2) With IMPOSE_SOILT, we can either impose a certain USDA texture (via SOIL_FRACTIONS) and this propagates to all the soil parameters, but we can as well impose specific parameters in isolation (with a default texture as Loam).

4) r7442: Corrects units and improves comments for REINF_SLOPE and SLOPE_NOREINF.

5) r7443 + r7444: Corrects comments regarding WETNESS_TRANSPIR_MAX.

[jgipsl]

1) Done [7460] : change all occurrences of SPRED_PREC in source and config. Corresponds to the first issue above.

[jgipsl]

4) Done in [7461]
5) Done in [7462]

[jgipsl]

6) r7337 : Simplification of soil texture processing (this commit was forgotten in the list above). This merge needs to be done before 2).

[jgipsl]

6) Done in [7534]: merged changeset r7337 and r7338
2) Done in [7535]: merged changeset r7339
3) Done in [7536]: merged changeset r7432

[aducharne]

I think that this ticket should be let open for a while, as new developments in branch 2.2 will come that are worthwhile for the trunk:

6) r7547 to correct pb with GET_SLOPE cf ticket #832
7) definition of SECHIBA_QSINT cf ticket #835
8) definition of SPREAD_PREC cf ticket #836