Add instructions on how to build generic debs from GIT.

* Describe how to build generic debs from GIT
* Replace '.arch' with '_arch' which is the correct filename part for debs.
* Add the 'lib*.deb' packages from c9b5cc (Sat May 17 13:20:59 2014).
* Remove references to the dracut and test packages in the install phase.

Signed-off-by: Turbo Fredriksson <turbo@bayour.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Add instructions on how to build generic rpms from GIT.

* Describe how to build generic rpms from GIT
* Add the 'lib*.deb' packages from c9b5cc (Sat May 17 13:20:59 2014).
* Remove references to the devel and test package in the install phaze.

Signed-off-by: Turbo Fredriksson <turbo@bayour.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>