am 946f9d1e: Merge change I020b31e1 into eclair-sdk

Merge commit '946f9d1edc25346f42e30e94e1553bcadea2acf5' into eclair

* commit '946f9d1edc25346f42e30e94e1553bcadea2acf5':
  doc change: add SDK sizes, checksums, small changes for online SDK doc set, add layoutopt doc.