On the 1.8.x branch, merge r1800619 from trunk to update CHANGES.


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/1.8.x@1800620 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/CHANGES b/CHANGES
index 7e802c6..c48c6c3 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,24 @@
+Version 1.8.18
+(10 Jul 2017, from /branches/1.8.x)
+http://svn.apache.org/repos/asf/subversion/tags/1.8.18
+
+ User-visible changes:
+  - Server-side bugfixes:
+    * fsfs: never attempt to share directory representations (r1785053)
+    * fsfs: make consistency independent of hash algorithms (r1785737 et al)
+	This change makes Subversion resilient to collision attacks, including
+	SHA-1 collision attacks such as <http://shattered.io/>.  See also our
+	documentation at <https://subversion.apache.org/faq#shattered-sha1> and
+	<https://subversion.apache.org/docs/release-notes/1.8#shattered-sha1>.
+
+  - Client-side and server-side bugfixes:
+    * work around an APR bug related to file truncation (r1759116)
+
+ Developer-visible changes:
+  - General:
+    * update serf download URI in build scripts (r1700130 et al)
+
+
 Version 1.8.17
 (29 Nov 2016, from /branches/1.8.x)
 http://svn.apache.org/repos/asf/subversion/tags/1.8.17