Limit file descriptors used by packs

diff --git a/RelNotes b/RelNotes
index 3e77358f704fde7271f18ccbf90a57419550b265..0362cfa3799b49cd56565df62e8b030789edfdbb 120000 (symlink)
--- a/RelNotes
+++ b/RelNotes
@@ -1 +1 @@
-Documentation/RelNotes-1.5.5.txt
\ No newline at end of file
+Documentation/RelNotes/1.7.4.1.txt
\ No newline at end of file