Added the atexit module and documentation from Skip Montanaro

<skip@mojam.com>.  Revisions to the markup to make it pass LaTeX, added
an index entry and a reference from the sys.exitfunc documentation.

This closes SourceForge patch #100620.

1 files changed, 1 insertions, 0 deletions

diff --git a/Doc/lib/lib.tex b/Doc/lib/lib.tex
index b426a6a0e5..3e60b9bf7e 100644
--- a/Doc/lib/lib.tex
+++ b/Doc/lib/lib.tex
@@ -73,6 +73,7 @@ and how to embed it in other applications.
 
 \input{libpython}		% Python Services
 \input{libsys}
+\input{libatexit}
 \input{libtypes}
 \input{libuserdict}
 \input{liboperator}