FIX: docstring and usage
FIX: no longer use the PFN returned by the FC except for removal but
construct it
FIX: speed up checks in SEs
Minor usual cosmetic changes
FIX: some type errors from pylint
Merge pull request #1758 from phicharp/Fix-RMandStorage-v6r10

[v6r10] Fix rm and storage
v6r10-pre20
wrong indentation
Merge pull request #1759 from atsareg/fix-v6r9

[v6r9] AccountingDB - bug fix
v6r9p33
wrong indentation
Conflicts resolved with v6r9
Merge branch 'rel-v6r9' into rel-v6r10
v6r10-pre21
Conflicts resolved with v6r10
v6r9p33, v6r10-pre21