Changes.txt in autobuild-1.5.22 vs Changes.txt in autobuild-1.5.23

@@ -1,4 +1,7 @@
+== Version 1.5.23
+* fix bug with paths that contain regexp special characters like C++
+
 == Version 1.5.22
 * minor change to #env_add_path. The provided directory is not filtered out
   anymore if it does not exist, to avoid the API user to *have* to call it
   *after* the packages have been installed