libmkv: from Handbrake project

Libmkv was started from Handbrake but is now unmaintained upstream.

Patches:
- A01: add constant to header file
- A02: Breaks API: Allow changing output sampling frequency
- P00: Fix accessing large files on Mingw32

pkgs/development/libraries/libmkv/default.nix

@@ -0,0 +1,29 @@
+{ stdenv, fetchgit, libtool, autoconf, automake }:
+
+stdenv.mkDerivation rec {
+  name = "libmkv-0.6.5.1p2";
+  
+  src = fetchgit {
+    url = https://github.com/saintdev/libmkv.git;
+    rev = "refs/tags/0.6.5.1";
+    sha256 = "1b0441x5rl5dbwrc0hq9jih111iil7ckqws3hcdj63jx2ma3s4hi";
+  };
+
+  nativeBuildInputs = [ libtool autoconf automake ];
+
+  # TODO fix library version
+  preConfigure = "sh bootstrap.sh";
+
+  # From Handbrake
+  patches = [
+    ./A01-hbmv-pgs.patch
+    ./A02-audio-out-sampling-freq.patch
+    ./P00-mingw-large-file.patch
+  ];
+
+  meta = {
+    homepage = https://github.com/saintdev/libmkv;
+    license = stdenv.lib.licenses.gpl2;
+    maintainers = [ stdenv.lib.maintainers.wmertens ];
+  };
+}