- add PostgreSQL support to KIWIAnalyseCustomData to check for running
  databases and if they are available try to export the entire content.
- add PostgreSQL support to KIWIConfig.sh to import previously dumped
  databases during image building.
Merge pull request #315 from thutterer/pgsql_import_export

- Add PostgreSQL support to KIWIAnalyseCustomData.pm (export) and KIWIConfig.sh (import)