Skip the ETag header check in responce while using SSE-C encrpytion of S3
sdb module: add backward-compatible support for Python 3.3+
a) add integration test of using SSE-C encryption of S3; b)fix style issue to align PEP8
add long_type and use six.unichr
cloudsearch module: add backward-compatible support for Python 3.3+
adding new endpoints to kinesis: Aingapore, Sydney, Tokyo
Merge pull request #2368 from KennF/fix_s3_sse_c

Skip the ETag header check in responce while using SSE-C encrpytion of S3. Fixes #2368.
Merge pull request #2403 from felixonmars/sdb-py3

sdb module: add backward-compatible support for Python 3.3+. Fixes #2403.
Merge pull request #2434 from tly1980/develop

Singapore, Sydney and Tokyo are missing in Kinesis Region. Fixes #2434.
Merge pull request #2432 from felixonmars/cloudsearch-py3

cloudsearch module: add backward-compatible support for Python 3.3+. Fixes #2432.