[packages] protobuf: add host install

Signed-off-by: Dirk Neukirchen <dirkneukirchen@web.de>
quickfix format-security

Signed-off-by: Dirk Neukirchen <dirkneukirchen@web.de>
[packages] rtorrent: quickfix undefined symbols

some gzip undefined symbols so link against zlib

Signed-off-by: Dirk Neukirchen <dirkneukirchen@web.de>