descending key sync OK.
save meta data.
testing.
all test update.
testing.
all test update.
db sync transport.
config folder.
public read.
S3 directly inherits abs
s3 sync.
s3 sync by descending key OK.
Merged ytkyaw/ydn-db into master
Fix changes detection on websql for table with compound keys.

The websql driver split compound index in n columns, when parsing schema
from database, the driver read each column as a separated index. So when
trying to detect changes, the websql always detect that the number of
index on a store with compound index is not the same.
This patch split the compound index on schema before comparaison.
Merged in mrande/ydn-db/fix-websql-changed (pull request #12)

Fix changes detection on websql for table with compound keys.
composite index schema change.
make test more generic.
websql versioning.
websql versioning change.
websql version numbering.