Update Wiiuse library to 0.15.4, fixes support for newer Wiimotes on Linux

[qwertychouskie]

STK's Wiiuse had some modifications, but I tested and upstream seems to work fine, and fixes the -TR Wiimote.

[deveee]

Update is simple, but did you test it?

[qwertychouskie]

Yes, and it works quite nicely, though for some reason Travis doesn't like it. Also AppVeyor fails but there should be an update to Wiiuse to address this soon.

[deveee]

Good. Fix travis is doable, most important is testing with real devices. I'm not sure if someone else has wii remote too...

[qwertychouskie]

Hmm. Both Travis and AppVeyor fail with not finding wiiuse.h, but compilation works fine on my system. @deveee Can you take a look and see why, and push a fix?

[deveee]

Previously source files were in lib/wiiuse, now there is a "src" directory. Changing
include_directories("${PROJECT_SOURCE_DIR}/lib/wiiuse/")
to
include_directories("${PROJECT_SOURCE_DIR}/lib/wiiuse/src")
in STK cmake file fixes compilation for me.

[qwertychouskie]

OK, ready for merging.

[qwertychouskie]

@deveee Any chance of getting this merged soon, since the compilation was fixed?

[deveee]

I think that it needs some testing by more people on different systems, but I can't do it myself.

[MarioCMFlys]

Tested on Ubuntu-based Linux and works as expected

[hiker]

Thanks a lot for the patch, and for testing!!