- if file already exists, rename the old one (very likely to be truncated)   instead of the downloaded one
- if file already exists, rename the old one (very likely to be truncated)
  instead of the downloaded one


git-svn-id: 154ef8c3fe64227994b8bbe8dff85f2f4de2843e@10392 11da6c6d-24c7-0310-97e0-b6d17e038e62

sparky/rsget.pl-core