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They used to be os_DATA and os_DATA get deleted in make clean

They used to be scripts in Makefile.am

* Add custom vif script for the helper VM
* Cleanup helper code

Remove:
	HELPER_CACHE_DIR
	HELPER_IMG
	HELPER_KERNEL
	HELPER_INITRD
 	TIMELIMIT
Add:
	TIMEOUT

In configure, remove:
	--enable-network-backend
	--with-helper-img
	--with-helper-kernel
	--with-helper-initrd

This can be used to enable or disable the version check between
snf-image-host and snf-image-helper at the end of the update-helper
script.

Using package caches to create the helper image is dangerous now that
snf-image-helper is automatically retrieved.

The files hosted in this directory will be added in the
/etc/apt/preferences.d directory of the helper image before multistrap
runs.

By default this directory is $(LOCALSTATEDIR)/cache/snf-image/helper

Support launching helper domain on top of Xen hypervisor under PV mode.

Helper VM becomes hypervisor aware by passing hypervisor=$HYPERVISOR
in the kernel command line and thus acts accordingly (which logging
devices to use, what disk/floppy devices to expect, etc)

We separate all hypervisor specific functions and vars and source them
according to $HYPERVISOR env var.

Due to the fact that multiconsole for PV domains is supported only after
linux kernel 3.2 (Stefano Stabellini tree - branch 3.2-multiconsole-2
git://xenbits.xen.org/people/sstabellini/linux-pvhvm.git

) all
output/error report and logging is done via hvc0.

Helper domain is debootstraped with 2 kernels (linux-image-amd64,
linux-image-xen-amd64) and is booted accordingly.

Floppy is not supported in PV so floppy is passed as another disk.

The images created can run on top of xen-hvm and xen-pvm hypervisor.

Change logging to start with HELPER_MONITOR_ in order to parse it when
having only one console.
Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>

multistrap is more flexible allows as to define more that one
repository to retrieve packages from.

The curl dependency is not optional any more.

This url points to a json file that contains the value for other
OS parameters. Using this file we can pass parameters to snf-image
without writting them in Ganeti's config.data. This is
useful, for 2 reasons:
* Privacy: We don't want the password to appear in the Ganeti config
* Speed: Some parameters like IMG_PERSONALITY can be quite large (a few
KB) and since ganeti shares the instance configuration among different
nodes, the overall system will start getting slower if many instances
with IMG_PERSONALITY exist.

This program is used to output info and error messages from the host.

This programm will get the stderr file as input and it will create a
json image-error msg

This program transforms raw helper monitor messages into json strings
under very strict rules. This reduces security concerns since the
helper VM output cannot be trusted.

Add a utility initially written by vkoukis for monitoring the image
copy. This utility outputs notifications to a named pipe. An external
program can get informed for the image deployment progress by reading
the notifications from this named pipe. The monitoring mechanism
will be extended in the future to have other snf-image subparts
output notification to this named pipe too.

snf-image will detect at runtime if pithos backend is installed

snf-image-helper by default uses it's own version of unattend.xml file,
but if UNATTEND variable is specified then it will use the one provided
by snf-image-host.

snf-image-host will make use the external progress monitor program
if the PROGRESS_MONITOR variable is not empty. This way progress
monitor can be enable or disabled by just overwriting the aforementioned
variable in the defaults file.

 * Drop "custom" image format type. The same functionality is provided
   by network-hosted images.
 * Images with id that starts with "http:", "https:", "ftp:", "ftps:"
   are considered to be network hosted and are downloaded via cURL.
 * Images with id that starts with "pithos:" are considered to be
   pithos-hosted.
 * Support for pithos and network hosted images is disabled by default.
   You may enable it when configuring the project  using
   --enable-pithos-backend and --enable-network-backend respectively.

The scripts runs debootstrap and creates a new disk image

Also add ChangeLog and COPYING info

Many bugs have been fixed.

The project is still not workable yet

The project is not workable yet