Update files for the 7.4b BETA release.
diff --git a/runtime/doc/pi_zip.txt b/runtime/doc/pi_zip.txt
index f14a899..87f6475 100644
--- a/runtime/doc/pi_zip.txt
+++ b/runtime/doc/pi_zip.txt
@@ -1,4 +1,4 @@
-*pi_zip.txt*	For Vim version 7.4a.  Last change: 2013 Apr 17
+*pi_zip.txt*	For Vim version 7.4b.  Last change: 2013 Apr 17
 
 				+====================+
 				| Zip File Interface |