Add tzdata

Glibc 2.16 no longer contains timezone data (yay!) so provide tzdata
instead.

pkgs/data/misc/tzdata/default.nix

@@ -0,0 +1,33 @@
+{ stdenv, fetchurl }:
+
+let version = "2012f"; in
+
+stdenv.mkDerivation rec {
+  name = "tzdata-${version}";
+
+  srcs =
+    [ (fetchurl {
+        url = "http://www.iana.org/time-zones/repository/releases/tzdata${version}.tar.gz";
+        sha256 = "1k165i8g23rr0z26k02x1l4immp69g6yqjrd3lwmbvj5li4mmsdg";
+      })
+      (fetchurl {
+        url = "http://www.iana.org/time-zones/repository/releases/tzcode${version}.tar.gz";
+        sha256 = "1m6rg9003mkjyvpv5gg5lcia9fzhy7ndwgs68qlpbipnw5p0k2pk";
+      })
+    ];
+
+  sourceRoot = ".";
+
+  makeFlags = "TOPDIR=$(out) TZDIR=$(out)/share/zoneinfo ETCDIR=$(TMPDIR)/etc LIBDIR=$(TMPDIR)/lib MANDIR=$(TMPDIR)/man AWK=awk";
+
+  postInstall =
+    ''
+      mv $out/share/zoneinfo-posix $out/share/zoneinfo/posix
+      mv $out/share/zoneinfo-leaps $out/share/zoneinfo/right
+    '';
+
+  meta = {
+    homepage = http://www.iana.org/time-zones;
+    description = "Database of current and historical time zones";
+  };
+}

pkgs/top-level/all-packages.nix

@@ -6434,6 +6434,8 @@ let
 
   ttf_bitstream_vera = callPackage ../data/fonts/ttf-bitstream-vera { };
 
+  tzdata = callPackage ../data/misc/tzdata { };
+
   ubuntu_font_family = callPackage ../data/fonts/ubuntu-font-family { };
 
   ucsFonts = callPackage ../data/fonts/ucs-fonts { };