Add 'third_party/nix/' from commit 'be66c7a6b24e3c3c6157fd37b86c7203d14acf10' r/724

git-subtree-dir: third_party/nix
git-subtree-mainline: cf8cd640c1adf74a3706efbcb0ea4625da106fb2
git-subtree-split: be66c7a6b24e3c3c6157fd37b86c7203d14acf10

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diff --git a/third_party/nix/doc/manual/release-notes/rl-0.14.xml b/third_party/nix/doc/manual/release-notes/rl-0.14.xml
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+<section xmlns="http://docbook.org/ns/docbook"
+      xmlns:xlink="http://www.w3.org/1999/xlink"
+      xmlns:xi="http://www.w3.org/2001/XInclude"
+      version="5.0"
+      xml:id="ssec-relnotes-0.14">
+
+<title>Release 0.14 (2010-02-04)</title>
+
+<para>This release has the following improvements:</para>
+
+<itemizedlist>
+
+  <listitem>
+    <para>The garbage collector now starts deleting garbage much
+    faster than before.  It no longer determines liveness of all paths
+    in the store, but does so on demand.</para>
+  </listitem>
+
+  <listitem>
+    <para>Added a new operation, <command>nix-store --query
+    --roots</command>, that shows the garbage collector roots that
+    directly or indirectly point to the given store paths.</para>
+  </listitem>
+
+  <listitem>
+    <para>Removed support for converting Berkeley DB-based Nix
+    databases to the new schema.</para>
+  </listitem>
+
+  <listitem>
+    <para>Removed the <option>--use-atime</option> and
+    <option>--max-atime</option> garbage collector options.  They were
+    not very useful in practice.</para>
+  </listitem>
+
+  <listitem>
+    <para>On Windows, Nix now requires Cygwin 1.7.x.</para>
+  </listitem>
+
+  <listitem>
+    <para>A few bug fixes.</para>
+  </listitem>
+
+</itemizedlist>
+
+</section>