Changes

Update clubb_intr.F90

Reversed debug_level change to lapack_wrap

Cam clubb error handling jenkins test (#194)

Wrote Jenkinsfile and bash script similar to CLUBB error handling test

Fixed and equalized NaN checks in lapack_wrap (#1246)

See CAM pull request larson-group/CAM#188

Added debug_level_at_least(0) checks where missing and changed debug_level(1) to 0 in lapack_band_solve,
so the new CAM CLUBB error handling test can do what it's supposed to do.

Using a CLUBB function to do a linear interpolation. It's possible that
this is BIT_CHANGING to round-off level.

Update clubb_intr.F90

Replaced erroneously committed debug output with more evocative message.

Changed output for CAM CLUBB error handling Jenkins test
CLUBB ticket larson-group/clubb#975

Now, we're writing the output of grep to a file and check if the file is empty to determine success or failure for each individual check.