Update `FROM` images to radial/distro in tarmakers
Change `MAINTAINER` email
Clean up and combine apt-get steps
Update .gitattributes for new rootfs.tar locations
Remove repository name in `run.sh`; local build
Reformat base/curl tarmaker Dockerfiles

Combine similar commands into less steps, use radial terminology.
Remove bridge_utils, iproute2, iptables from base/curl builds.

Purged from docs and inclusion in buildroot. Didn't specifically need
it, so yanked it.
Serialize tarbuilder clean and build steps, `chown 1000` tar.md5
Update email and CMD syntax in tar import Dockerfiles.
Remove cURL config step from base image; not needed
Add CA_CERTIFICATES packge to fully enable secure usage; fix typo.
Overhaul READMEs.

Corrected links, better descriptions, updated protocol and feature
support after new packages were added.
Update rootfs.tar images.

Leaner builds: removed unneeded packages; smaller file sizes.
Bug fixes: secure transfer works as intended in cUrl image.
Add git flavor folder.

Manually removed duplicate binaries caused by tar extract. See bug #1.
Uses alternate compiler; faster times, plus fixes clone issues in bug #2.
Overhaul repo README, add git flavor description.