Update pigz to 2.2.5 source code
diff --git a/pigz/yarn.h b/pigz/yarn.h
index 7d99c7a..7e3f914 100644
--- a/pigz/yarn.h
+++ b/pigz/yarn.h
@@ -1,6 +1,6 @@
 /* yarn.h -- generic interface for thread operations
- * Copyright (C) 2008 Mark Adler
- * Version 1.1  26 Oct 2008  Mark Adler
+ * Copyright (C) 2008, 2011 Mark Adler
+ * Version 1.3  13 Jan 2012  Mark Adler
  */
 
 /*
@@ -100,9 +100,9 @@
 
    -- Error control --
 
-   yarn_name - a char pointer to a string that will be the prefix for any error
-        messages that these routines generate before exiting -- if not changed
-        by the application, "yarn" will be used
+   yarn_prefix - a char pointer to a string that will be the prefix for any
+        error messages that these routines generate before exiting -- if not
+        changed by the application, "yarn" will be used
    yarn_abort - an external function that will be executed when there is an
         internal yarn error, due to out of memory or misuse -- this function
         may exit to abort the application, or if it returns, the yarn error