Deprecate support for --dockerport flag.

As the result of long standing issues with support for half-close of inbound
TCP connections to Virtual Box guests on (at least) OSX use of port-forwarded
docker connections should be discouraged.

So, if the user really wants to configure it, let them. Otherwise, don't
set it up in the first place.

See boot2docker issue #150 (and others) for details.

Docker-DCO-1.1-Signed-off-by: Jon Seymour <jon.seymour@gmail.com> (github: jonseymour)
README: fix installations link for Mac OSX

    Docker-DCO-1.1-Signed-off-by: Johan Euphrosine <proppy@google.com> (github: proppy)
Merge pull request #195 from proppy/patch-1

README: fix installations link for Mac OSX
Create driver model and refactor virtualbox dependencies into driver
Bring back explicit init command; add init flag to force auto initialize.
Fix machine config local variable name
Clean deferred calls in vbm
Refactor known ports into driver consts
Upgrade the image - preserving VM state (restarting if it was running)
Machine will be restarted after successful download if necessary.
Docker-DCO-1.1-Signed-off-by: Michael Neale michael.neale@gmail.com (github: michaelneale)
Merge pull request #193 from michaelneale/master

Upgrade the image - preserving machine state
Merge pull request #184 from zeeyang/master

Create driver model and refactor virtualbox dependencies into driver
Sorry, I didn't test the effects of merging 2 PRs
Merge pull request #196 from SvenDowideit/sven-should-not-merge-fast

Sorry, I didn't test the effects of merging 2 PRs
bump-1.1.2
Merge pull request #197 from SvenDowideit/bump-1.1.2

bump-1.1.2
Revert "Sorry, I didn't test the effects of merging 2 PRs"
Revert "Create driver model and refactor virtualbox dependencies into driver"
Merge pull request #198 from boot2docker/revert-196-sven-should-not-merge-fast

Revert "Sorry, I didn't test the effects of merging 2 PRs"
Merge pull request #199 from boot2docker/revert-184-master

Revert "Create driver model and refactor virtualbox dependencies into dr...
Sorry, windows won't let you move that file aside while vbox is using it