libtracefs: version 1.6.4

Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
diff --git a/Makefile b/Makefile
index 36c2076..61ed976 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@
 # libtracefs version
 TFS_VERSION = 1
 TFS_PATCHLEVEL = 6
-TFS_EXTRAVERSION = 3
+TFS_EXTRAVERSION = 4
 TRACEFS_VERSION = $(TFS_VERSION).$(TFS_PATCHLEVEL).$(TFS_EXTRAVERSION)
 
 export TFS_VERSION