TOOLS-194 euca-delete-bundle ported to requestbuilder
Merge remote branch 'upstream/requestbuilder' into TOOLS-195
Merge remote branch 'upstream/requestbuilder' into TOOLS-195
Ported euca-download-bundle to requestbuilder

* Moved common code into a helper module

Fixes TOOLS-194 TOOLS-195 TOOLS-67 TOOLS-81
A little bit of cleanup

* Use code attribute on AWSError object
* Use format for strings
* Misc cleanup
Fix line wrapping and bucket/prefix handling

Partially addresses TOOLS-168
Kill off delete-bundle's NIFO mode's delay
Make mkdtemp_for_large_files its own function
Make ReleaseAddress call EucalyptusRequest.configure

Fixes TOOLS-329
Make RegisterImage add mappings to params, not args (future-proofing)
Merge remote-tracking branch 'origin/requestbuilder' into requestbuilder