attributes.

Currently import does not use these attributes as they are planned
for use by importlib (which will be another commit).

Thanks to Filip Gruszczyński for the initial patch and Brian Curtin
for refining it.

Patch by Serhiy Storchaka.

This also moves the TypeError that results from trying to use a unicode
comment from the 'close' step to the point at which the comment is added to
the zipfile.

Patch by Tshepang Lekhonkhobe.

Original patch by Tshepang Lekhonkhobe.

Not that I haven't tested it to make sure it works, just that it
can run against an empty source file.

Initial patch by Popa.Claudiu.

Here we also add a test (which uses mock, which is why I didn't
check it in on 3.2).

Not that I haven't tested it to make sure it works, just that it
can run against an empty source file.

Initial patch by Popa.Claudiu.

merge to default - Issue 10484 - Incorporate improvements to CGI module - Suggested by Glenn Linderman. Refactor code and tests

3.2 - Issue 10484 - Incorporate improvements to CGI module - Suggested by Glenn Linderman. Refactor code and tests

end with ">", i.e. follow convention.

   Resizing is used _inside_ libmpdec functions, and it is permitted to
   change x->alloc several times while setting x->len at the end of the
   function. Therefore, for dynamic mpd_t x->alloc can _temporarily_ drop
   below x->len. Of course the final result always has x->len <= x->alloc.

   For static mpd_t this cannot happen, since resizing to a smaller
   coefficient is a no-op.

2) Remove micro optimization in mpd_switch_to_dyn(): Previously only the
   valid initialized part of the existing coefficient up to x->len was
   copied to the new dynamic memory area. Now copying does the same as
   realloc() and the entire old memory area is copied.

   The rationale for this change is that it is no longer needed to memorize
   the explanation given in 1).