Data format is u32 totalDecompressedSize, then repeat:
u32 chunkDecompressedSize, u32 chunkCompressedSize, chunk data.
If chunkCompressedSize == 0, then chunk is not compressed.
Also start fixing integer sizes on server.
On client, set endianness to match server.
Change-Id: I70c8203037ad7165968ca0d02d0da5f7cc14b7e0
Signed-off-by: David Li <davidxli@google.com>