Add xboxdrv and various libretro cores

src/libretro-prosystem-git/.SRCINFO

@@ -0,0 +1,23 @@
+# Generated by mksrcinfo v8
+# Wed Dec 28 07:16:07 UTC 2016
+pkgbase = libretro-prosystem-git
+	pkgdesc = libretro implementation of ProSystem. (Atari 7800)
+	pkgver = 116.b6f7c1b
+	pkgrel = 1
+	url = https://github.com/libretro/prosystem-libretro
+	arch = i686
+	arch = x86_64
+	arch = arm
+	arch = armv6h
+	arch = armv7h
+	groups = libretro
+	license = GPL2
+	makedepends = git
+	depends = zlib
+	source = git+https://github.com/libretro/prosystem-libretro.git
+	source = https://raw.github.com/libretro/libretro-super/master/dist/info/prosystem_libretro.info
+	sha256sums = SKIP
+	sha256sums = SKIP
+
+pkgname = libretro-prosystem-git
+

src/libretro-prosystem-git/PKGBUILD

@@ -0,0 +1,34 @@
+# Maintainer: Oliver Jaksch <arch-aur@com-in.de>
+
+pkgname=libretro-prosystem-git
+pkgver=116.b6f7c1b
+pkgrel=1
+pkgdesc="libretro implementation of ProSystem. (Atari 7800)"
+arch=('i686' 'x86_64' 'arm' 'armv6h' 'armv7h')
+url="https://github.com/libretro/prosystem-libretro"
+license=('GPL2')
+groups=('libretro')
+depends=('zlib')
+makedepends=('git')
+
+_libname=prosystem_libretro
+_gitname=prosystem-libretro
+source=("git+https://github.com/libretro/${_gitname}.git"
+	"https://raw.github.com/libretro/libretro-super/master/dist/info/${_libname}.info")
+sha256sums=('SKIP'
+	'SKIP')
+
+pkgver() {
+  cd "${_gitname}"
+  echo $(git rev-list --count HEAD).$(git rev-parse --short HEAD)
+}
+
+build() {
+  cd "${_gitname}"
+  make
+}
+
+package() {
+  install -Dm644 "${_gitname}/${_libname}.so" "${pkgdir}/usr/lib/libretro/${_libname}.so"
+  install -Dm644 "${_libname}.info" "${pkgdir}/usr/share/libretro/info/${_libname}.info"
+}