Merge branch 'maint-1.6.4' into maint-1.6.5

diff --git a/RelNotes b/RelNotes
index 918bab855c536c85db4271faa219a6b0348ed128..f60e868f4721b24cfe989303193bf0a9be3473a7 120000 (symlink)
--- a/RelNotes
+++ b/RelNotes
@@ -1 +1 @@
-Documentation/RelNotes-1.6.5.4.txt
\ No newline at end of file
+Documentation/RelNotes-1.6.5.8.txt
\ No newline at end of file