More trivial comment -> docstring transformations by Ka-Ping Yee,

who writes:

Here is batch 2, as a big collection of CVS context diffs.
Along with moving comments into docstrings, i've added a
couple of missing docstrings and attempted to make sure more
module docstrings begin with a one-line summary.

I did not add docstrings to the methods in profile.py for
fear of upsetting any careful optimizations there, though
i did move class documentation into class docstrings.

The convention i'm using is to leave credits/version/copyright
type of stuff in # comments, and move the rest of the descriptive
stuff about module usage into module docstrings.  Hope this is
okay.

Lib/htmlentitydefs.py

@@ -1,3 +1,5 @@
+"""HTML character entity references."""
+
 entitydefs = {
     'AElig':	'\306',  	# latin capital letter AE = latin capital ligature AE, U+00C6 ISOlat1
     'Aacute':	'\301',  	# latin capital letter A with acute, U+00C1 ISOlat1