Add JosefW.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@5914 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/AUTHORS b/AUTHORS
index d1b0945..eeb0549 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -27,6 +27,8 @@
 interception machinery, support for client allocation pools, and minor
 other tweakage.
 
+Josef Weidendorfer wrote Callgrind and the associated KCachegrind GUI.
+
 Frederic Gobry helped with autoconf and automake.
 
 Daniel Berlin modified readelf's dwarf2 source line reader, written by Nick