base/kernel_config: add CONFIG_IP_PNP_DHCP

because #244 is broken
base: disable kernel dhcp
If mount fails, let's "modprobe" the partition type and try again

It would appear that mount fails to "modprobe btrfs" for whatever reason.  This is a reasonably clean workaround for that problem (modprobe $PARTITION_TYPE).
make it possible to change the config dir and the path to the config file
Add /proc/config.gz support
Merge pull request #249 from tianon/add-proc-config

Add /proc/config.gz support
Make isolinux.cfg more clear by adding a few comments from the docs
Add some handy symlinks

I had a very hard time finding the Docker log and the init.d script in the image.  With these symlinks, they're pretty trivial to find. :)
Doh... TCL doesn't have "mountpoint", so we need to emulate it for this script (which is pretty simple for what this script needs)
Add lots of minor improvements to /etc/init.d/docker

Especially and including automatic detection of "BTRFS" to add "-s btrfs" to the daemon.
base: re-enable dhcp config
Merge pull request #247 from proppy/patch-5

base: add kernel dhcp config but disable boot param
Merge pull request #253 from tianon/improve-init.d-docker

Add lots of minor improvements to /etc/init.d/docker
Merge pull request #252 from tianon/fix-cgroup-script

Doh... TCL doesn't have "mountpoint", so we need to emulate it for this script
Merge pull request #251 from tianon/add-handy-symlinks

Add some handy symlinks
Merge pull request #250 from tianon/add-isolinux-comments

Make isolinux.cfg more clear by adding a few comments from the docs
Merge pull request #248 from aheissenberger/feature/pull/env-variable-modify

boot2docker cli / ENV / config dir and path to the config file
create an initial MAINTAINERs file
Merge pull request #254 from SvenDowideit/add-maintainers

create an initial MAINTAINERs file
Merge pull request #242 from tianon/mount-sucks

If mount fails, let's "modprobe" the partition type and try again