Remove waf entirely in favor of meson as the only supported build
system. Waf was officially deprecated in 0.36.0, and has not been
preferred over meson since 0.35.0.
Instead of running the test directly in the build script, we can make a
separate step in the workflow so it looks a little prettier. For running
the actual tests, we skip mingw since they will never be run (cross
compiled). Additionally, improve the github workflow logic a bit so that
way logs on failure are only shown when that specific step fails. The
freebsd job still has to be less elegant since it's in a weird vm
thingy.
Not really related but the location of various build directories
(particularly waf) are corrected as well (might as well).
The old "meson build" build command was actually deprecated a few months
ago*. It turns out that you're supposed to use "meson setup build"
instead which has been around for years. Go ahead and be a good citizen
and update this in the CI. Also replace any mention of "meson build"
with "meson setup build" in the documentation as well and change the one
random hardcoded string we have in meson.build to "meson configure
build" (might as well).
*: 3c7ab542c0
Update the github workflows to also do meson builds for every OS.
Additionally, make every workflow execute the built mpv executable
(except for windows and FreeBSD's waf executable) to make sure that it
runs. As an aside, FreeBSD unfortunately is a bit less elegant since it
is in a VM.
LaserEyess
Dudemanguy
Kacper Michajłow
Thomas Weißschuh
Aaron Boxer
Jan Ekström
Jan Beich