Add ability for user to specify extra chroot vars
Added ability to only run specific tests
add sample pbulk.conf for reference
Finished implementing chroot story and tests

All tests pass, finally!

Gave DOSANDBOX a new 'create' option, for use when trying to preserve the sandbox

Added a few missing dosandbox tests

Added an even more-convenient way to run a single test

Indented various <<- / EOF pairs, now that I know I can