- logging cleanup (mikem)
    - add new exception for resultdir not available (mebrown)
    - moved mock cache dir to /var/cache/mock (williams)
    - added version variable and version banner to logs (williams)
    - removed import of popen2 to whack deprecated message (williams)
    - prevent disabling ccache on epel-5 (tmz)
    - added configs for sparc and s390 (dgilmore)
    - fixed git log command used in build (tmz)
    - added copy of spec/sources for building srpms (mebrown)
    - changed unlink to rmdir (mebrown)
    - set HOME directory globally (mikeb)
    - commented out privlege drop in --copyin (williams)