• Move functions that might be used in class-specific cleanup functions (geom_test_cleanup, etc) down so the testcases don't emit noise when bailing
• Conform to the TAP protocol better when dealing with classes that can't be loaded and with temporary files that can't be allocated for tracking md(4) devices.

MFC after: 2 weeks
X-MFC with: r293028, r293029, r293048
Sponsored by: EMC / Isilon Storage Division