Rename lib__future__.tex to libfuture.tex and add link in lib.tex.
diff --git a/Doc/lib/lib.tex b/Doc/lib/lib.tex
index 928371c..ba3442a 100644
--- a/Doc/lib/lib.tex
+++ b/Doc/lib/lib.tex
@@ -101,6 +101,7 @@
\input{libuser}
\input{libbltin} % really __builtin__
\input{libmain} % really __main__
+\input{libfuture} % really __future__
\input{libstrings} % String Services
\input{libstring}
diff --git a/Doc/lib/lib__future__.tex b/Doc/lib/libfuture.tex
similarity index 100%
rename from Doc/lib/lib__future__.tex
rename to Doc/lib/libfuture.tex