by all true Tkinter widgets.  (Not that I *like* this module -- it
stinks, but until I have something better, I can't nuke it.)

I'll clean that up later.  Also corrected a mistake introduced by the
previous reformatting: an 'else' belonging to a 'for' was accidentally
reindented to belong to the 'if' inside the 'for'.  Note that the
module uses inconsistent indentation -- most code is indented with 8
spaces, but some of the reformatted code uses 4 spaces.  I'll fix this
later in the promised cleanup pass.

Add reference to DLD 3.3 at http://www-swiss.ai.mit.edu/~jaffer/DLD.html.

in a cacheline.

Links are now either in 'todo' or 'done', and ext links
are hadled more like local links except that no further
links are gathered (and sometimes they aren't checked,
e.g. for mailto and news URLs).  The -x option reverses
its meaning: it disables checking of ext links (they are
moved to 'done' without checking).  A new 'errors' table
collects pages with bad links as we go -- redundant,
but useful for the GUI version which needs to report
this as we go.  Some new methods, including reset().
New checkpoint format.

Adapted the GUI to the changes in the Checker class.
Added Quit and "Start over" buttons, and a checkbox
to disable checking external links.  The details
window now also shows bad links emanating from the
selected page.  Miscellaneous small chages.

returned addresses on 16-byte cacheline boundary.

If the users selects an item in 'To check', start checking there.

Increase MAXPAGE to 150K.
Add back printing of __doc__ for usage message.

(and the &*^$%@ resource files got binhexed again, sigh)

- Faster HTML parser derivede from SGMLparser (Fred Gansevles).

- All manipulations of todo, done, ext, bad are done via methods, so a
derived class can override.  Also moved the 'done' marking to
dopage(), so run() is much simpler.

- Added a method status() which returns a string containing the
summary counts; added a "total" count.

- Drop the guessing of the file type before opening the document -- we
still need to check those links for validity!

- Added a subroutine to close a connection which first slurps up the
remaining data when it's an ftp URL -- apparently closing an ftp
connection without reading till the end makes it hang.

- Added -n option to skip running (only useful with -R).

- The Checker object now has an instance variable which is set to 1
when it is changed.  This is not pickled.

py-comment-region instead of comment-region.

parse-partial-sexp in some Emacsen.

(py-goto-beyond-final-line): use py-parse-partial-sexp-works-p.

guarded by 'if self.tempcache', to reduce the likelihood of this
causing an exception when invoked during __del__...

When -x is combined with -q, still do the checking, but don't print
the error in this phase -- they are reported by report_errors().

in the 'bad' dictionary (sanitize them so they are picklable; the
sanitation code is now a subroutine); don't check mailto: URLs; omit
colon in Error message.

Add version number, printed at startup in non-quited mode.

Fixed occasional inclusion of unpicklable objects (Message in errors).
Changed indent of a few messages.

any more?  This was because the *parent* process in test_socket.py did
an os._exit(0)!  Getting rid of that now...

- remove bogus initialization using uninitialized i
- derive initial incr from hash
- copy mp->ma_table into a local variable

argument, not hardwired to a dictionary.

in front of the 0x, like such: "0000x1".

Reindented the whole table.

argument to the linker (required for DEC Alpha threads).