Limit file descriptors used by packs

diff --git a/RelNotes b/RelNotes
index 44b610e8f896c836a1a60133ac87c93969f8568f..0362cfa3799b49cd56565df62e8b030789edfdbb 120000 (symlink)
--- a/RelNotes
+++ b/RelNotes
@@ -1 +1 @@
-Documentation/RelNotes-1.5.3.3.txt
\ No newline at end of file
+Documentation/RelNotes/1.7.4.1.txt
\ No newline at end of file