Unfortunately wlc 0.0.10 seems to be the cause for segfaults on sway,
way-cooler and orbment.
This will also build wlc with all optional packages (i.e. zlib,
valgrind and doxygen).
(cherry picked from commit 2d640b9d6e)
The code was a bit messy (unused parameters, etc.) and caused some
warnings/errors which could potentially cause some problems.
(cherry picked from commit 4b85b23534)