The aws cli will send range gets of an object with ranges like
the following:
bytes=0-8388607
bytes=8388608-16777215
bytes=16777216-25165823
bytes=25165824-
The last one with the end offset unspecified just means the rest of
the object. So this fixes that case where there is only one offset
in the range.
The xml encoding of the s3.ListBucketsOutput return type was not giving
correct results when there is only a single bucket. This revives the
old aws xsd schema and generated types that will give more accurate xml
encoding results.
