Update pigz to 2.2.5 source code
diff --git a/pigz/README b/pigz/README
index bad49da..bf29102 100644
--- a/pigz/README
+++ b/pigz/README
@@ -1,4 +1,4 @@
-pigz 2.1.6 (17 Jan 2010) by Mark Adler
+pigz 2.2.5 (xx Apr 2012) by Mark Adler
 
 pigz, which stands for Parallel Implementation of GZip, is a fully functional
 replacement for gzip that exploits multiple processors and multiple cores to