Remove debug comments
Raise specific error when throughput is exceeded

Fixes #1194
Unit test for boto.cloudformation.stack.Tag class. This test
demonstrates the failure to parse a Tag object correctly when the
member 'Value' comes before the member 'Key'.
Fix the boto.cloudformation.stack.Tag class to parse the XML object
correctly when the member 'Value' comes before the member 'Key'.
Fixed dynamodb encode_s function to properly handle unicode/utf-8
encoding.
Don't unecessarily check if it's not a string after we've confirmed it
was a unicode string in dynamo type fix
Docs reflect current AssumeRole duration limits

Limits on duration_seconds on assume role are really 900-3600 seconds as documented here http://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRole.html
Merge pull request #1231 from bobveznat/patch-1

Docs reflect current AssumeRole duration limits
Small fix in case someone puts a non-string value in the headers dict.  Fixes #1229.
Merge branch 'develop' of github.com:boto/boto into develop
Merge branch 'dynamodb-propogate' into develop

Fixes #1226 and #1194.

* dynamodb-propogate:
  Raise specific error when throughput is exceeded
  Remove debug comments