Added Appveyor config file.
Added Appveyor config file.

mesonbuild/meson,pexip/meson,trhd/meson,MathieuDuponchelle/meson,mesonbuild/meson,centricular/meson,jeandet/meson,rhd/meson,ernestask/meson,ernestask/meson,QuLogic/meson,aaronp24/meson,fmuellner/meson,thiblahute/meson,MathieuDuponchelle/meson,ernestask/meson,MathieuDuponchelle/meson,becm/meson,jpakkane/meson,pexip/meson,thiblahute/meson,jeandet/meson,wberrier/meson,centricular/meson,ernestask/meson,rhd/meson,pexip/meson,rhd/meson,wberrier/meson,QuLogic/meson,fmuellner/meson,pexip/meson,thiblahute/meson,aaronp24/meson,rhd/meson,trhd/meson,becm/meson,trhd/meson,becm/meson,aaronp24/meson,ernestask/meson,fmuellner/meson,jeandet/meson,trhd/meson,jpakkane/meson,thiblahute/meson,aaronp24/meson,trhd/meson,rhd/meson,jeandet/meson,mesonbuild/meson,QuLogic/meson,aaronp24/meson,centricular/meson,jeandet/meson,QuLogic/meson,pexip/meson,centricular/meson,jpakkane/meson,QuLogic/meson,fmuellner/meson,aaronp24/meson,aaronp24/meson,fmuellner/meson,QuLogic/meson,ernestask/meson,rhd/meson,jeandet/meson,centricular/meson,wberrier/meson,mesonbuild/meson,mesonbuild/meson,thiblahute/meson,thiblahute/meson,MathieuDuponchelle/meson,becm/meson,jpakkane/meson,MathieuDuponchelle/meson,becm/meson,pexip/meson,jeandet/meson,becm/meson,wberrier/meson,aaronp24/meson,becm/meson,mesonbuild/meson,wberrier/meson,fmuellner/meson,wberrier/meson,wberrier/meson,jpakkane/meson,jeandet/meson,rhd/meson,MathieuDuponchelle/meson,jpakkane/meson,becm/meson,MathieuDuponchelle/meson,rhd/meson,jpakkane/meson,mesonbuild/meson,thiblahute/meson,pexip/meson,trhd/meson,mesonbuild/meson,thiblahute/meson,becm/meson,centricular/meson,trhd/meson,fmuellner/meson,MathieuDuponchelle/meson,ernestask/meson,pexip/meson,jpakkane/meson,fmuellner/meson,ernestask/meson,centricular/meson,fmuellner/meson,trhd/meson,pexip/meson,MathieuDuponchelle/meson,aaronp24/meson,mesonbuild/meson,mesonbuild/meson,wberrier/meson,becm/meson,QuLogic/meson,jpakkane/meson,QuLogic/meson,jeandet/meson,centricular/meson,trhd/meson,pexip/meson,ernestask/meson,thiblahute/meson,QuLogic/meson