Revert "Update pkg_config.10 for pfBlockerNG"

This reverts commit 8f650618269a350604fda23ab84c8a12d772f8fc.
Revert "Revert "Update pkg_config.10 for pfBlockerNG""

This reverts commit 38f0281aaf3720beda7e56c28e0da556f30c2420.