config: read (but not write) from $XDG_CONFIG_HOME/git/config file

diff --git a/RelNotes b/RelNotes
index 212c51c19820e3a2a1bd7a773796bf430f6202b1..19bb2ebbe687d9ded1a5c82d28d4410de1e2f19f 120000 (symlink)
--- a/RelNotes
+++ b/RelNotes
@@ -1 +1 @@
-Documentation/RelNotes-1.5.3.8.txt
\ No newline at end of file
+Documentation/RelNotes/1.7.12.txt
\ No newline at end of file