JCLOUDS-619

Hello,

this is the fix for the issue described here[1].

Please review and let me know if you need something else.

Thanks and kind regards
Markus

[1] https://issues.apache.org/jira/browse/JCLOUDS-619
@demobox No it is not. It would be the same than `(int) Math.floor(Math.log10(totalParts))`
@andrewgaul Just tell me how you want it. My thought was the same, but with this solution it just does not matter.