Fix a bunch of typos in documentation, docstrings and comments.
(From SF patch #810751)
diff --git a/Doc/texinputs/python.sty b/Doc/texinputs/python.sty
index 85fe52f..d8071ee 100644
--- a/Doc/texinputs/python.sty
+++ b/Doc/texinputs/python.sty
@@ -1,5 +1,5 @@
 %
-% python.sty for the Python docummentation  [works only with with Latex2e]
+% python.sty for the Python docummentation  [works only with Latex2e]
 %
 
 \NeedsTeXFormat{LaTeX2e}[1995/12/01]