old git-flow stuff; no longer required
tweaks for my $work sandbox

get my .gitconfig over there
be able to install new files (via `new_sandbox`) without running the expensive stuff
keep my .exrc updated (not just an outdated copy)
be able to run `git commit` without barfing
added -a switch to keep `t` from setting $BAIL_ON_FAIL

I never added such a thing before because that was essentially the same as just running `prove`
however, `t` has eventually grown to the point where it does so much other stuff,
-	that sometimes it's not convenient to substitute the equivalent `prove` command
-	besides, it was trivial to add, so why not?