Logical comparison operators

[AlexanderRichert-NOAA]

Description

gfortran (I'm using GCC 13) fails to build because it doesn't like using the '==' comparison operator for logicals in the following files:
rtma_minmaxtrh.fd/maxtbg.fd/maxmin_ak.f
rtma_minmaxtrh.fd/mintbg.fd/maxmin_ak.f

Apparently '.eqv.' is the Fortran standards-compliant way of comparing logicals.

Steps to Reproduce

(cmake build with gcc 13)

Output

/dev/shm/rrfs_utl/rtma_minmaxtrh.fd/mintbg.fd/maxmin_ak.f:482:11:

  482 |         IF(CHRLY_AB == .FALSE.) THEN
      |           1
Error: Logicals at (1) must be compared with .eqv. instead of ==