Improve the docker version and docker info commands
Update api docs
Remove cgo from term
Use uintptr instead of int for Fd
Remove unused constants
Move Termios struct to os specific file
fix Path corruption in 'docker diff'
Merge pull request #772 from dotcloud/improve_version_info_cmds

* API: Improve version info cmds
Update test to reflect new ApiInfo struct
Merge pull request #784 from dotcloud/remove_cgo_dependency

* Runtime: Remove cgo dependency
remove check on login
Merge pull request #793 from dotcloud/774-remove_login_check_on_pull-fix

- Registry: remove login check on pull
added test
Merge pull request #792 from dotcloud/780-diff-fix

- Runtime: fix Path corruption in 'docker diff'
remove TrimLeft as it's go1.1
Merge pull request #794 from dotcloud/780-diff-fix2

- Runtime: remove TrimLeft as it's go1.1
Bumped version to 0.4.0
Fixed missing Body.Close when doing some HTTP requests. It should improve some request issues.
Minor changes in registry.go
Disabled HTTP keep-alive in the default HTTP client for Registry calls