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
abord build if mergeConfig returns an error and fix duplicate error message
Add proper bash completion for "docker push"
use less reflection in command line method invocation
Merge pull request #2034 from metalivedev/1969-cherrypick-fixcommitformat

Fix #1969 formatting, add information about multiline json
testing, issue #1948: Increase TestAttachDetach and TestRunDetach timeout
Add test
add missing error check
added initial draft of the Docker infrastructure doc
Clean out a few outdated FIXME items
Merge pull request #2061 from dotcloud/1948-test-detach

testing, issue #1948: Increase TestRunDetach timeout
Cleanup whitespace in API 1.5 docs

remove whitespace on blank lines
[docs] use angle brackets in MAINTAINER example email
Merge pull request #2109 from shamrin/patch-4

[docs] use angle brackets in MAINTAINER example email
Fix contrib/mkimage-debian.sh apt caching prevention
Merge pull request #2106 from mastahyeti/api_1.5_docs_whitespace

Cleanup whitespace in API 1.5 docs
Merge pull request #2103 from tianon/clean-out-fixme

Clean out a few outdated FIXME items
Insert popularity and boost docs results.
use empty string so TempDir uses the OS's temp dir automatically (Closes #2117)
Use correct auth config when logging in.