install artist_to_albumartist program (FS#32635)

PKGBUILD

 # Maintainer:  Bartłomiej Piotrowski
-# Contributor:  Mateusz Herych <heniekk@gmail.com>
+# Contributor: graysky <graysky AT archlinux DOT us>
+# Contributor: Mateusz Herych <heniekk@gmail.com>
 # Contributor: Army <uli[dot]armbruster[at]gmail[dot]com>
 
 pkgname=ncmpcpp
 pkgver=0.5.10
-pkgrel=2
+pkgrel=3
 pkgdesc='Almost exact clone of ncmpc with some new features'
 arch=('i686' 'x86_64')
 url='http://ncmpcpp.rybczak.net/'
@@ -28,4 +29,7 @@ build() {
 package() {
   cd $srcdir/$pkgname-$pkgver
   make DESTDIR=$pkgdir install
+
+  make -C extras/
+  install -Dm755 extras/artist_to_albumartist $pkgdir/usr/bin/
 }