rebase: factor out reference parsing

diff --git a/RelNotes b/RelNotes
index e29d6504d9e8fe45d3f7ff7f82f1e8f1f57b9f6f..b942e499449d97aeb50c73ca2bdc1c6e6d528743 120000 (symlink)
--- a/RelNotes
+++ b/RelNotes
@@ -1 +1 @@
-Documentation/RelNotes-1.5.6.txt
\ No newline at end of file
+Documentation/RelNotes/1.7.4.txt
\ No newline at end of file