[chirp_devel] New mod for issue 5943

OK, here is the patch to allow for driver-generated comments. Mods to chirp_common and run_tests. Otherwise pretty simple. Just ignores the Comment field in compare_mem module of runt_tests.py if the feature attribute 'generated_comment' is true. Also note my new issue #5941 about the View > Columns discrepancy in the latest release. I poked about a bit to try to find the problem and was only able to see that the wrong memedit page is being returned in mainapp at do_columns.