Lionel GUEZ authored 9 months ago and GUEZ Lionel committed 8 months ago

Promote corner from dummy argument of `input_ssh` to variable of
module `input_ssh_m`. The dummy argument corner of `set_all_extr` is
also removed, since `set_all_extr` now accesses corner from
`input_ssh_m`. Motivation: preparation to access the corner of NetCDF
files from `get_1_outerm`.