branches: 1.1.2; 1.1.4; 1.1.6;
Update device-streams binaries from Roc Vallès

- Split device-streams.tar.gz.uue into seperate source and
binaries device-streams-2.2.1-src.tar.gz and device-streams-2.2.1.lha
to match upstream
- Add device-streams.README.md from upstream
- Add simple 'update' script to help updating next time
- Binaries now avoid 32 bit file offset issues (they use 64 bit
offsets where supported, and otherwise avoid corrupting data due
to 32 bit limits)
- Binaries now built with updated bebbo/amiga-gcc toolchain

Pullup: netbsd-10, netbsd-9 and possibly netbsd-8