Revert "jetpack: minor consistency tweaks"

This reverts commit dbc1cdda853dec729e4f281eda523faf82f48570.

(integrated from trunk branch change d69839b by Todd Whiteman <toddw@activestate.com>)
Revert "jetpack: support adding our own namespaces"

This reverts commit d57dafe8881fe14801695401f035438d9f446909.

(integrated from trunk branch change f17d0cd by Todd Whiteman <toddw@activestate.com>)
jetpack: re-implement the custom namespaces - using one resolver

(integrated from trunk branch change a5b9a96 by Todd Whiteman <toddw@activestate.com>)