dracut 006 release

Here comes a new dracut version. Thanks to all who have contributed to this release.

The tarball can be found here:
http://sourceforge.net/projects/dracut/files/

The development repository can be found here:
http://dracut.git.sourceforge.net/git/gitweb.cgi?p=dracut/dracut;a=summary

dracut-006
==========
- fixed mdraid with IMSM
- fixed dracut manpages
- dmraid parse different error messages
- add cdrom polling mechanism for slow cdroms
- add module btrfs
- add btrfsctl scan for btrfs multi-devices (raid)
- teach dmsquash live-root to use rootflags
- trigger udev with action=add
- fixed add_drivers handling
- add sr_mod
- use pigz instead of gzip, if available
- boot from LVM mirrors and snapshots
- iscsi: add support for multiple netroot=iscsi:
- Support old version of module-init-tools
- got rid of rdnetdebug
- fixed "ip=auto6"
- dracut.conf: use "+=" as default for config variables
- bugfixes