1.2.0-3:  Initial Machinekit import
control:  fix python-sendfile dependency: syntax and version

- Incorrect syntax
- Bump version down to 1.2.0, available in Wheezy
Patch unit test failure

Library code contains hack to detect old pysendfile v. 1.2.4 libs.
The tests check for pysendfile separately, for some reason, but don't
perform the same 1.2.4 detection.  This patch adds that to the unit
tests, too.

https://github.com/giampaolo/pyftpdlib/blob/ae83aaf8d843ffef0c93bb09ad6464659177e1b6/pyftpdlib/handlers.py#L68-L70
Finally, do away with python-sendfile dependencies