Some FTP servers (e.g. Pure-ftpd) end up hanging if we close the data
connection before transferring all the requested data. If we send ABOR
in that case, it prevents the server from hanging.

Bug: https://bugzilla.redhat.com/643656
Reported by: Pasi Karkkainen, Patrick Monnerat

---
 lib/ftp.c           |    7 ++++++-
 tests/data/test1036 |    1 +
 tests/data/test1057 |    1 +
 tests/data/test110  |    1 +
 tests/data/test122  |    1 +
 tests/data/test135  |    1 +
 6 files changed, 11 insertions(+), 1 deletions(-)

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