Change defaults for Carbon isotopes and irrigate

Only turn C13/C14 for clm6_0 and BGC, and also require the DATM forcing to be CRUJRA2024 or CAM7 and for the historical period. So for example SSP compsets won't have C13/C14 on, single point compsets won't, or for using older forcing (like CAM6, or GSWP3v1, Qian, or CRUv7). Also whenever use_c13 or use_c14 is on turn on the corresponding time series file.

Also change default for irrigate to on for historical SP/BGC cases.

New raw lai, soilcolor, 1700-2023 landuse, and NOANTHRO landuse files

This branch tag is intended as the tag with which we generate the
CTSM5.4 fsurdat/landuse files.

b4b-dev merge 2025-10-16

Prep Makefile to make ctsm5.4 fsurdat/landuse datasets

Update alpha54 branch from ctsm5.3.075 to .079

Made new aux_clm baselines.

Add support for CLM_CMIP_ERA

Options cmip6 or cmip7 can be set in env_run.xml.
Documented in cime_config/config_component.xml and in PR #3501.

Fix C14 being upside down

Fixes #3528. Latitude bands were coming in the opposite way from the
input dataset.

Update submodules to match versions in cesm3_0_alpha07e (+ CMEPS)

Merge b4b-dev to master

Adjustment of albedo timestep filtering with FATES