geoipupdate: fix data directory, make config useful.

geoip and geoipupdate need to share a data directory, which is
/usr/local/share/GeoIP by default. This doesn’t work with Homebrew,
since it can’t link into both cellar locations. I’ve manually specified
a reasonable location as the default.

The shipped configuration doesn’t do anything out of the box. Users who
pay will need to edit the file anyway to add their license keys, but
now it should just work for free users.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Formula/geoipupdate.rb

@@ -6,20 +6,33 @@ class Geoipupdate < Formula
   sha1 'd3c90ad9c9ad5974e8a5a30c504e7827978ddea7'
   head 'https://github.com/maxmind/geoipupdate.git'
 
+  if build.head?
+    depends_on 'autoconf' => :build
+    depends_on 'automake' => :build
+    depends_on 'libtool' => :build
+  end
+
   option :universal
 
   def install
     ENV.universal_binary if build.universal?
 
+    # Download free databases by default
+    # See https://github.com/maxmind/geoip-api-c#150
+    inreplace 'conf/GeoIP.conf.default', 'YOUR_USER_ID_HERE', '999999'
+    inreplace 'conf/GeoIP.conf.default', 'YOUR_LICENSE_KEY_HERE', '000000000000'
+    inreplace 'conf/GeoIP.conf.default', /^ProductIds .*$/, 'ProductIds 506 533'
+
     system "./bootstrap" if build.head?
 
     system "./configure", "--disable-dependency-tracking",
                           "--disable-silent-rules",
+                          "--datadir=#{var}",
                           "--prefix=#{prefix}"
     system "make", "install"
   end
 
   test do
-    system "#{bin}/geoipupdate", "-V"
+    system "#{bin}/geoipupdate", "-v"
   end
 end