update TODO-RELEASE regarding the talloc change.
Shipping our own private copy of talloc was a good idea in 2008,
when it was not readily available on most target platforms. Today,
the situation is quite different, as it is a standard library on
major Linux distributions.
diff --git a/TODO-RELEASE b/TODO-RELEASE
index 43b1e8e..edf1099 100644
--- a/TODO-RELEASE
+++ b/TODO-RELEASE
@@ -1 +1,2 @@
#library what description / commit summary line
+libosmocore change major external talloc dependency / internal talloc removal