Improve network performance for VirtualBox

Without those lines, VitrualBox machines are being very slow with all network operations (tested only in OS X Lion, but they are supposed to work everywhere). See https://github.com/mitchellh/vagrant/issues/1807
add missing error check
added initial draft of the Docker infrastructure doc
Fix contrib/mkimage-debian.sh apt caching prevention
Use correct auth config when logging in.
Update AUTHORS
Corrected error in the package name
Remove deprecated packaging directory (distro-specific packaging is now managed downstream by their respective package maintainers)
Small fixes to parameter names in docs for ADD command.
Minor updates to postgresql_service.rst

I've added the steps that were missing/wrong for me when I went through this just now.
Merge pull request #2155 from jdubois/patch-1

- Documentation: Corrected error in the package name
Record termination time in state.

Supercedes pull #1946
Clarify LGTM process to contributors.
tell the new developer how they can replace the real docker binary with the one they've been hacking on (#2142)
Merge pull request #2165 from jrydberg/master

- Registry: Use correct auth config when logging in.
Merge pull request #2164 from pnasrat/add-finished-time

* Runtime: Record termination time in state.
Merge pull request #2128 from titanous/update-authors

Update AUTHORS
Merge pull request #2159 from nathankleyn/fix-references-to-param-names

Small fixes to parameter names in docs for ADD command.
Merge pull request #2166 from pnasrat/document-approval

Clarify LGTM process to contributors.
Merge pull request #2038 from tianon/mkimage-debian-fixes

Fix contrib/mkimage-debian.sh apt caching prevention