Rob W. W. Hooft's spelling fixes for the Library Reference. I hope
SourceForge doesn't choke on this batch :-)

I'm not entirely sure this is 100% correct. The patch changes an
\index{persistency} to \index{presistence}, and I don't know what \index{}
does. But it seems to do so persi--er, consistently, so I hope it isn't a
problem.
diff --git a/Doc/lib/libdircache.tex b/Doc/lib/libdircache.tex
index f75bb53..45ac01a 100644
--- a/Doc/lib/libdircache.tex
+++ b/Doc/lib/libdircache.tex
@@ -22,7 +22,7 @@
 \end{funcdesc}
 
 \begin{funcdesc}{opendir}{path}
-Same as \function{listdir()}. Defined for backwards compatability.
+Same as \function{listdir()}. Defined for backwards compatibility.
 \end{funcdesc}
 
 \begin{funcdesc}{annotate}{head, list}