att-update-env: export the vars we set

Signed-off-by: Christopher Larson <kergoth@gmail.com>
att: disable suspending of dtach

Without this, we can't suspend processes inside the dtach session easily.

Signed-off-by: Christopher Larson <kergoth@gmail.com>
att-env: add usage info, error messages

Signed-off-by: Christopher Larson <kergoth@gmail.com>
dvtm-print-status: move bits out of dynamic

Signed-off-by: Christopher Larson <kergoth@gmail.com>
bgrm: disown the backgrounded rm

Signed-off-by: Christopher Larson <kergoth@gmail.com>
git-clone-via: don't exit if the fetch from upstream fails

We need to be able to get a successful, if out of date, clone.

Signed-off-by: Christopher Larson <kergoth@gmail.com>