These scripts assemble a ceontos 5 or 6 changeroot and allow to build
binary RPMs out of source RPMs.

Build a centos5 chroot tarball in /var/cache/pba-rpm/centos5.tar.gz

  ./bootstrap-centos.sh 5

Build a centos6 chroot tarball in /var/cache/pba-rpm/centos6.tar.gz

  ./bootstrap-centos.sh 6

Build binary packages from a source rpm for centos5 and 6 and
store the results to the configure repositories from /etc/pbs/repositories.d

Packages may refer additional yum-repos for building by adding lines like

###XBCS-PBA-Build-Source-pba http://yum.clazzes.org/repos/pba-1.0/pba-1.0.repo

to their spec files adding the given repos description to the build chroot
in /etc/yum.repos.d/clazzes.repo

This approch is not yet well-tested and may
be adapted in the future.