Add item about Clang support to 9.1 release notes

diff --git a/doc/src/sgml/release-9.1.sgml b/doc/src/sgml/release-9.1.sgml
index 23e9abc574404df24aaffbe71cc8759d20e98937..a4f8e2459fcbdd8482a902ff2041013b374fd450 100644 (file)
--- a/doc/src/sgml/release-9.1.sgml
+++ b/doc/src/sgml/release-9.1.sgml
@@ -2413,6 +2413,13 @@
        
       
 
+      
+       
+         Improve support for building with
+         Clang (Peter Eisentraut)
+       
+      
+