Log Message:
x11/lxqt-session: update to 0.17.0

lxqt-session-0.17.1 / 2021-04-16
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   - Fixed compilation against Qt < 5.15 (especially, 5.12).

lxqt-session-0.17.0 / 2021-04-15
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  - Code cleanup and modernization (use const references where possible, fix
  possible use of uninitialized variables, removing deprectaed methods, etc.).
  - Remove Openbox configuration for WM agnosticism.
  - Completely moved to Qt5 signal/slot syntax.
  - Become subreaper and end children on finishing session.