temp/mesa: Build tag and include mesa-xatracker (!261)

This updates the PKGBUILD to build tags instead of the release branch
(which will see commits until the specific release is EOL),

This commit also adds building the mesa-xatracker package.

[ci:skip-build]: already built successfully in CI

temp/mesa/APKBUILD

 # Forked from Alpine, so we can upgrade the version and build etnaviv and tegra
 pkgname=mesa
 pkgver=9999
-_pkgver=19.0
-pkgrel=0
+_pkgver=19.0.0-rc7
+pkgrel=1
 pkgdesc="[${_pkgver}] Mesa DRI OpenGL library"
 url="https://www.mesa3d.org"
 arch="all"
@@ -14,7 +14,7 @@ subpackages="
 	$pkgname-dri-freedreno:_dri
 	$pkgname-dri-virtio:_dri
 	$pkgname-glapi $pkgname-egl $pkgname-gl $pkgname-gles
-	$pkgname-osmesa $pkgname-gbm
+	$pkgname-osmesa $pkgname-gbm $pkgname-xatracker
 
 	"
 depends_dev="
@@ -54,7 +54,7 @@ makedepends="
 	ninja
 	"
 source="
-	https://gitlab.freedesktop.org/mesa/mesa/-/archive/${_pkgver}/mesa-${_pkgver}.tar.gz
+	https://gitlab.freedesktop.org/mesa/mesa/-/archive/mesa-${_pkgver}/mesa-mesa-${_pkgver}.tar.gz
 	10-adjust-cache-deflate-buffer.patch
 	20-musl.patch
 	meson-add-toggle-for-TLS-support-in-GLX.patch
@@ -81,7 +81,7 @@ armhf|aarch64)
 		     $pkgname-dri-tegra:_dri"
 	;;
 esac
-builddir="$srcdir/mesa-${_pkgver}"
+builddir="$srcdir/mesa-mesa-${_pkgver}"
 
 
 build() {
@@ -152,6 +152,13 @@ osmesa() {
 	mv "$pkgdir"/usr/lib/libOSMesa.so.* "$subpkgdir"/usr/lib/
 }
 
+xatracker() {
+	pkgdesc="Mesa XA state tracker for vmware"
+
+	install -d "$subpkgdir"/usr/lib
+	mv "$pkgdir"/usr/lib/libxatracker*.so.* "$subpkgdir"/usr/lib/
+}
+
 gbm() {
 	pkgdesc="[${_pkgver}] Mesa gbm library"
 	replaces="mesa"
@@ -246,7 +253,7 @@ _dri() {
 	esac
 }
 
-sha512sums="07c0fed3dd565a025df69fc3b2c097ff324d8c2ae8177b869bfd5bb01542cd57d32d28ba00c7c091f92430a1be04c660d3cb709a0bafd039831ffc76969b874d  mesa-19.0.tar.gz
+sha512sums="27b2d15e03ac0444f576b478501b15654d6400d2769db87491eb3b2224bafcabff5d1d1c1f0165ae31272c2b4d965c6d9230703c29ef81314283a9f59ed6e3c6  mesa-mesa-19.0.0-rc7.tar.gz
 cdf22d2da3328e116c379264886bd01fd3ad5cc45fe03dc6fd97bdc4794502598ee195c0b9d975fa264d6ac31c6fa108c0535c91800ecf4fcabfd308e53074cc  10-adjust-cache-deflate-buffer.patch
 02db65893d55b5667d9c3bc193fc089e5408596431e06363fe2adea00c9e3c4e80612f3d03dc61f931d1a6ae04340bccf55e1376cf00bbf2433990713649d286  20-musl.patch
 a7bbc0d8836fe5eb7220c7b41d8af439878a3876302de32739243232f979ea9c63d2069fcd78bef370eafef0a21f491ef99219ae686e965326475764244bbe5d  meson-add-toggle-for-TLS-support-in-GLX.patch"