talk about the new exec form of RUN (Closes #3723) implemented by #3558

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@fosiki.com> (github: SvenDowideit)
Merge pull request #3720 from therealprologic/master

Add script for building CRUX base images
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Move tests from core into ipallocator

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Update code for new test cases

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Added new mkimage-yum.sh script to create CentOS base images

mkimage-rinse.sh requires rinse, which is not readily available on
CentOS or Fedora.  Plus, creating a base image is trivial with yum
alone.

Docker-DCO-1.1-Signed-off-by: Chris St. Pierre <chris.a.st.pierre@gmail.com> (github: stpierre)
Finalize core changes with new package

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
fix shebang in mkimage-yum.sh

Docker-DCO-1.1-Signed-off-by: Chris St. Pierre <chris.a.st.pierre@gmail.com> (github: stpierre)
update REMOTE_TODO.md

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)
Merge pull request #3738 from vieux/update_todo

update REMOTE_TODO.md
Fix mflag test issue with "ResetForTesting" (which only showed up under dyntest for some odd reason)

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
Merge pull request #3740 from tianon/fix-mflag-dyntest

Fix mflag test issue with "ResetForTesting"
no more TODO

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)
Merge pull request #3742 from vieux/update_todo

no more TODO
Refactor and fix register interface when bridge does not exist

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Fix typo in container.go

Docker-DCO-1.1-Signed-off-by: Paul Morie <pmorie@gmail.com> (github: pmorie)
Merge pull request #3743 from pmorie/typo

Fix typo in comment in container.go
Merge pull request #3724 from creack/extract-lxc-phase-2

Refactor process to command
Merge pull request #3730 from SvenDowideit/JSON-RUN-format-docs

talk about the new exec form of RUN (Closes #3723) implemented by #3558
move build to a job

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)