Spelling fixes supplied by Rob W. W. Hooft. All these are fixes in either
comments, docstrings or error messages. I fixed two minor things in
test_winreg.py ("didn't" -> "Didn't" and "Didnt" -> "Didn't").

There is a minor style issue involved: Guido seems to have preferred English
grammar (behaviour, honour) in a couple places. This patch changes that to
American, which is the more prominent style in the source. I prefer English
myself, so if English is preferred, I'd be happy to supply a patch myself ;)
diff --git a/Lib/lib-old/Para.py b/Lib/lib-old/Para.py
index 003ea1e..bf5f92c 100644
--- a/Lib/lib-old/Para.py
+++ b/Lib/lib-old/Para.py
@@ -56,7 +56,7 @@
 	#
 	# Tab to a given position (relative to the current left indent):
 	# remove all stretch, add fixed space up to the new indent.
-	# If the current position is already beying the tab stop,
+	# If the current position is already at the tab stop,
 	# don't add any new space (but still remove the stretch)
 	def tabto(self, tab):
 		total = 0