FIS: put the requests while they are kept in cache (allows debugging and
avoids being reset by the CleaningAgent)
FIX: mainly a bug that was setting files both Failed and Successful (in
FTSClient)
FIX: if source == target, set file Failed
FIX: don't use any longer PFN to get a PFN from SE
Merge pull request #1868 from phicharp/FIX-v6r10-FTS-140314

[v6r10] Fix fts 140314
v6r10p20
Conflicts resolved with rel-v6r10
Conflicts resolved with rel-v6r11
v6r10p20, v6r11-pre7