Merge pull request #423 from cstrouse/add-acl

Add acl (2.2.52) package

packages/acl.rb

+require 'package'
+
+class Acl < Package
+  version '2.2.52'
+  source_url 'http://download.savannah.gnu.org/releases/acl/acl-2.2.52.src.tar.gz'
+  source_sha1 '537dddc0ee7b6aa67960a3de2d36f1e2ff2059d9'
+
+  depends_on "attr"
+
+  def self.build
+    system "./configure --prefix=/usr/local --libexecdir=/usr/local/lib --disable-static"
+    system "make"
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install-dev"
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install-lib"
+  end
+end