only try to load Test::Pretty if it's requested
make t work for CE as well as Rent

refactored the work-environment stuff into a more easily extensible structure
made it so it can find Test::Class style single-module tests, as opposed to only directories full of .t files
added the proper dirs for finding CE test files
now copying t over to the sandbox, to help with testing

also now preserving timestamps on copies
added a script to refresh the sandbox

this is as per instructions in doc/howto/refresh-sandbox.txt
also refactored common code out of this and new_sandbox into update_user_records
made remount more useful

umount was never working, since there was always some other window sitting in that dir
so I added an fuser incantation to make the umount more likely to work
it ain't perfect, but it's better
have to `make tunnels` *after* you go to $CEROOT  (d'oh!)
added a prod target to sql
have to have my `pdoc` alias
this works slightly better for finding the branch point

(although it's still not perfect: grrrr)
also fixed a typo in the help message
made it so vimS could handle an env var in the args line

this enabled me to make the nifty vrpt script
a command to fire up a vim session with the given VCtools command