user/meson: pull in, bump, fix

user/meson/APKBUILD

+# Contributor: Sören Tempel <soeren+alpine@soeren-tempel.net>
+# Maintainer: 
+pkgname=meson
+pkgver=0.47.0
+pkgrel=0
+pkgdesc="Fast, user-friendly build system"
+url="http://mesonbuild.com/"
+arch="noarch"
+license="Apache-2.0"
+depends="python3 ninja"
+makedepends="python3-dev"
+subpackages="$pkgname-doc"
+source="https://github.com/mesonbuild/$pkgname/releases/download/$pkgver/$pkgname-$pkgver.tar.gz"
+
+build() {
+	cd "$builddir"
+	python3 setup.py build
+}
+
+check() {
+	cd "$builddir"
+	python3 setup.py check
+}
+
+package() {
+	cd "$builddir"
+	python3 setup.py install --prefix=/usr --root="$pkgdir"
+}
+
+sha512sums="844047ad184f60395c4b6dc61b8fb0f321722d19a8647b48cb3f05fda9ba57516bdcc2244d5bc9de74f2834d092235553faccde6172edaeb3c2d14ff633bc513  meson-0.47.0.tar.gz"