Rollback files need to have "." prefix so that they are not part of PROPFIND listings etc.
Rollback files need to have "." prefix so that they are not part of PROPFIND listings etc.

git-svn-id: 0c33e958600270102f91bf5868e396345dde476c@3240 e27351fd-9f3e-4f54-a53b-843176b1656c

red-hood/calendarserver,red-hood/calendarserver,red-hood/calendarserver,red-hood/calendarserver,red-hood/calendarserver,red-hood/calendarserver