qwt: update 5.2.1 -> 5.2.3

Remove patch that don't apply anymore; use sed instead.
qmmp: update 0.7.6 -> 0.8.2
python-robotframework: update 2.8.5 -> 2.8.6
python-robotframework-selenium2library: update 1.5.0 -> 1.6.0
duplicity: update 0.6.24 -> 0.6.25 (latest stable)
duply: update 1.7.3 -> 1.9.1
evtest: update 1.31 -> 1.32
babeltrace: update 1.2.3 -> 1.2.4