* added alert for file error: lots of errors happening when updating a volume:
* it seems BEntry::IsDirectory() returns false whereas it should return true for some directories
this is to be checked with a test app
* boot volume is now marked automatically as the source volume (a rule is yet to be found for the target volume)
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@16066 a95241bf-73f2-0310-859d-f6bbb57e9c96