ftp-server.patch - sync with upstream

the patch has been applied upstream
Merge pull request #493 from lslezak/ftp-server_sync

ftp-server.patch - sync with upstream
add-on-creator - use include_wrappers
Merge pull request #495 from lslezak/add-on-creator_include_wrappers

add-on-creator - use include_wrappers
dns-server - use include_wrappers, sync the patch with upstream
Merge pull request #496 from lslezak/dns-server_include_wrappers

dns-server - use include_wrappers, sync the patch with upstream