setuptools 3.4.1

Closes #28195.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
python: update 2.7.6 bottle.
juju 1.18.0.
juju: update 1.18.0 bottle.

Closes #28182.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Initialize cxxstdlib set lazily

This is used rarely and only at build-time, so we don't need to create
it when instantiating the formula.
sqlite 3.8.4.3
sqlite: update 3.8.4.3 bottle.