Content streams are not guaranteed to be non blocking

Change-Id: I78038d668a051f347d044615f84a5be6a5c57866
update for AA

Change-Id: I0d70046f30144c1047f4d973996fbd19806fba67
streams block

Change-Id: I5fc91fb2aaa877d3e8b6e6f20baa1e8f7cfbbb3b
Merge branch 'master' of https://github.com/koush/ion

# By Koushik Dutta
# Via Koushik Dutta
* 'master' of https://github.com/koush/ion:
  streams block
  update for AA
  Content streams are not guaranteed to be non blocking