simple copy (with cp) creates two versions on a versioned bucket

[henningpeters]

1. make sure you try this on a cover with versioning enabled

2. copy a file with cp into the bucket

3. check with following python/boto script the versions that were created

{{{
from boto.s3.connection import S3Connection
conn = S3Connection(ID, KEY)
b = conn.get_bucket(BUCKET)
for i in b.list_versions(prefix=FILENAME):
print i.name, i.version_id, i.size
}}}

=> only one should be there, but there a two per copy

=> looking at the strace log there is only one pair of open/close syscalls