update progressbar every MIN(1%, 512kB)
Bugfixes on docs

* fixed canonical link from index
* added http redirect from builder/basics
* fixed url in redirect_home
Add a script to create the docker-ut image

It's a fork of the mkimage-busybox.sh script and it adds socat to the
image. (socat being needed to add udp support, see #33).

This script, like mkimage-busybox.sh, probably only works on
Debian/Ubuntu.
+ Runtime: mount volumes from a host directory with 'docker run -b'
* Runtime: better integration of external bind-mounts (run -b) into the volume subsystem (run -v)
- Fix a few bugs in external mount-bind integration
- Runtime: small bugfixes in external mount-bind integration
Merge pull request #602 from gabrtv/111-bind-mounts

+ Runtime: mount volumes from a host directory with 'docker run -b'
Merge pull request #1029 from lopter/master

* Hack: add a script to create the docker-ut image (busybox + socat)
following the 'go vet' suggestions.
following 'go vet' in utils pkg.
Merge pull request #1019 from dotcloud/1002-change_update_progress_bar_rate-feature

*Remote API: update progressbar every MIN(1%, 512kB)
fix panic with unix socket
remove + from minor kernel version
Merge pull request #1041 from unclejack/fix_minor_kernel_version_for_git_kernels

remove + from minor kernel version for kernels built from git
Merge pull request #1035 from dotcloud/fix_panic_cast

- Runtime: fix panic with unix socket
Merge pull request #1028 from dhrp/bugfixes-on-docs

Bugfixes on documentation code
Merge pull request #1032 from andrewsmedina/govet

following the 'go vet' suggestions for the docker package.