Occasionally, we may not want to build a package for certain releases or suites, either because we don't need it, or it doesn't make sense. There are two control file fields we use for this: * `X-Debathena-Build-For` - A space-separated list of codenames (e.g. `trusty`, `precise`). The package will **ONLY** be built for those releases and no others. * `X-Debathena-No-Build` - A space-separated list of codenames that the package will **NOT** be built for. It is not a syntax error to have both fields, but it's entirely pointless.