The listing format gives every entry a size, and ListDirectoryWithTime
gives every entry a time as well, with the type character the only thing
distinguishing a directory from a file. We emitted a bare "D<name>" for a
directory instead, so a client parsing the documented three fields found
only one.
A directory has no meaningful size, so it is reported as zero. Listing
with times now has to stat a directory as well; one which cannot be
stat'ed is still listed, with its time reported as unknown.
Plain ListDirectory is unchanged: it still emits the bare "D<name>" it
always has, so no existing client sees a different directory entry.
MAVSDK's server already sends these fields and its client parses them.
QGroundControl assumed a directory entry was a bare name; a fix for that
is in hand.
Peter Barker
42277bd175