build: add missing leveldb defines
build: add missing leveldb defines

src/leveldb/build_detect_platform shows how upstream defines them.

These platform may not be able to fully build or run Bitcoin, but defining all
known to leveldb saves future hassle.

Now that all possible platforms are enumerated, specifying an unknown one is an
error.

peercoin/peercoin,DigitalPandacoin/pandacoin,peercoin/peercoin,peercoin/peercoin,DigitalPandacoin/pandacoin,DigitalPandacoin/pandacoin,DigitalPandacoin/pandacoin,peercoin/peercoin,DigitalPandacoin/pandacoin,peercoin/peercoin,DigitalPandacoin/pandacoin,peercoin/peercoin