Patch #995126: Correct directory size, and generate GNU tarfiles by default.
diff --git a/Doc/lib/libtarfile.tex b/Doc/lib/libtarfile.tex
index c841123..ce07c3e 100644
--- a/Doc/lib/libtarfile.tex
+++ b/Doc/lib/libtarfile.tex
@@ -261,7 +261,8 @@
     gigabytes. A \exception{ValueError} is raised if a file exceeds
     this limit.  If false, create a GNU tar compatible archive.  It
     will not be \POSIX{} compliant, but can store files without any
-    of the above restrictions.
+    of the above restrictions. 
+    \versionchanged[\var{posix} defaults to false.]{2.4}
 \end{memberdesc}
 
 \begin{memberdesc}{dereference}