This filters out the LANG and LC_ variables from the environment of programs
executed by RunCmd, in order to get consistent output of execute programs like
lvs, etc.

Reviewed-by: imsnah

- Clean generated files on “make maintainer-clean”.
- Build _autoconf.py and ganeti.initd on “make all”.

Reviewed-by: iustinp

This avoids forgetting some parameters, as it's happening right now 
(the correct known host file is not being passed)

In order to do so we split SSHCall into an auxiliary BuildSSHCmd which builds
the command but doesn't actually call it, and SSHCall itself which runs RunCmd
on top of BuildSSHCmd's result. BuildSSHCmd is then explicitely called by 
import/export who has to build a more complex command to be run later.

Reviewed-by: schreiberal

Reviewed-by: schreiberal

Reviewed-by: ultrotter

variables. The underline is there to mark it as a private module.

Reviewed-by: iustinp

Reviewed-by: iustinp

Reviewed-by: iustinp

- Bump version number to 1.2b2
- Add version.py file generated from version.py.in by autoconf

Reviewed-by: schreiberal

- Add Makefile in doc/examples/

Reviewed-by: schreiberal

This changes the implementation of RunCmd from using the popen2 module
to using the (new in 2.4) subprocess module.

This is helpful because the subprocess module has more advanced features
than popen2, the most important ones being the ability to run code in the
child process before the exec and ability to launch with modified
environment.

Reviewed-by: imsnah

Reviewed-by: imsnah

Reviewed-by: iustinp

Debian's default drbd configuration has some enabled directives, which make the
init script throw errors. Document how to disable the defaults and thus get rid
of the errors.

Reviewed-by: imsnah

Reviewed-by: iustinp

Reviewed-by: imsnah

Reviewed-by: iustinp

Reviewed-by: imsnah

Reviewed-By: iustinp

Reviewed-by: imsnah

Also add some debugging output.

- Replace magic values by constants.

Reviewed-by: iustinp

This changes a ';' to '&&' to make sure we run the create script from
the correct directory.

Reviewed-by: imsnah

This adds a check that the initial node's IP name doesn't resolve to a
loopback address (127.x.y.z).

Also remove an unused variable.

Reviewed-by: imsnah

Changes:
  - add note about installing the cron job
  - add an example cron job file and modify top-level Makefile.am to put
    it into the archive
  - modify the tutorial with information about setting a reasonable
    number of minors for DRBD
  - add note about installing on 32-bit the xen libc

Reviewed-by: imsnah

Reviewed-by: roman.marxer

The manpage wrongly states that the default unit for disk sizes is
gibibytes, whereas currently it's mebibytes. Fix that and also update
the '--help' output to display the default unit.

Reviewed-by: roman.marxer

This changelist add:
  - documentation on how to select the kernel and initrd (if needed) for
    instances
  - support in hypervisor.py for the initrd
  - adds note about internet-connectivity and debootstrap requirements
    for the minimal etch os
  - documentation on the miminum xenvg size

Reviewed-by: roman.marxer,ultrotter

This adds more examples and clarifies the existing ones.

Reviewed-by: roman.marxer

This changes the cluster init and node join to refuse a node that has a
different hostname than what the resolver returns.

Reviewed-by: imsnah

This changes a lot of docbook-related stuff and addresses a few consistency
issues.

Reviewed-by: vylavera

This fixes some consistency issues.

Reviewed-by: vylavera