clean out some other warnings

* case insensitive comparison

* case insensitive

environments.

distutils patches, which I'll leave to the distutils maintainers.

Tip: review the patch like this:

grep "^[\!+-] " <patchfile>

To get a quick and easy way to review the actual changes. Most of the
changes are single-line ones, anyway.

SourceForge doesn't choke on this batch :-)

I'm not entirely sure this is 100% correct. The patch changes an
\index{persistency} to \index{presistence}, and I don't know what \index{}
does. But it seems to do so persi--er, consistently, so I hope it isn't a
problem.

  (patch #100912)

unicodeobject.c(735) :
    error C2143: syntax error : missing ';' before '}'

The UTF-8 decoder is still buggy (i.e. it doesn't pass Markus Kuhn's
stress test), mainly due to the following construct:

    #define UTF8_ERROR(details)  do {                       \
        if (utf8_decoding_error(&s, &p, errors, details))   \
            goto onError;                                   \
        continue;                                           \
    } while (0)

(The "continue" statement is supposed to exit from the outer loop,
but of course, it doesn't.  Indeed, this is a marvelous example of
the dangers of the C programming language and especially of the C
preprocessor.)

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 ;)

genuine bug, so I checked it in separately.

stead of defining lots of function prototypes in each module.

new comment patterns get included.

posixmodule.

   you edit the file.

   the default via site.py...

free() the GC pointer, not the object pointer.

functions. Include it in stead of duplicating the declarations everywhere. Also
cleaned up toolbox module exports, and got rid of resNotFound error.

posix.openpty(). And conveniently also check if CVS write access really
works.

Closes SF patch #100722