Fix bad patch in SSG.

The patch was generated relative to the CLIP repo instead of the package
dir.
Introduce new build host bootstrapping mechanism.

Add a bootstrap.sh script to automate the getting started tasks.
Add FAQ regarding missing deps at install time
Fix mock yum conf repo path
Fix info msg location in ks %post
Drop openscap, use the one in RHEL
Bump package versions for rhel 6.4