Hercules and Hera GNU have many additional non-b4b tests

[JessicaMeixner-NOAA]

Describe the bug
Running with the gnu on the NCEP machine hercules with updates from PR #1145 exposes some likely uninitialized variables due to the way uninitialized variables are defined here versus with other compilers and machines. We can therefore use this output to address these issues here. Most are mod_def files and since most output is identical, it's likely that these are non-issues, but it's always good to address these issues.

To Reproduce
Run matrix with gnu on hercules twice, and compare output.

Expected behavior
We should only have the known non-b4b differences.

Screenshots
Here's the full output:

HerculesGNUvitself.matrixCompFull.txt
HerculesGNUvitself.matrixCompSummary.txt
HerculesGNUvitself.matrixDiff.txt

Additional context
So far all issues found are uninitialized variables that are not used.

[JessicaMeixner-NOAA]

First specific issue addressing the larger issue here: #1160

[JessicaMeixner-NOAA]

As of 3/28/24:

Hera:

hera.gnu.matrixCompFull.txt
hera.gnu.matrixCompSummary.txt
hera.gnu.matrixDiff.txt

Hercules:

hercules.gnu.matrixCompFull.txt
hercules.gnu.matrixCompSummary.txt

[MatthewMasarik-NOAA]

Thanks for the logs @JessicaMeixner-NOAA