rebase: factor out reference parsing

diff --git a/RelNotes b/RelNotes
index ed984e3b41b514333b7493d4082b52325116afd4..b942e499449d97aeb50c73ca2bdc1c6e6d528743 120000 (symlink)
--- a/RelNotes
+++ b/RelNotes
@@ -1 +1 @@
-Documentation/RelNotes-1.6.4.3.txt
\ No newline at end of file
+Documentation/RelNotes/1.7.4.txt
\ No newline at end of file