Hi, i'm starting this thread to discuss the
support for stipples in windows port.
My ideas in how this can be done is using
the w32term.c functions for drawing rects,
i tested using w32_fill_rect but it doesn't
work, i don't know how it works.

The elisp snippet that i'm using for test this is this:
```
(let* ((w (window-font-width))
       (stipple `(,w 1 ,(apply #'unibyte-string
                   (append (make-list (1- (/ (+ w 7) 8)) ?\0)
                       '(1))))))
  (insert "\n" (propertize "      " 'face `(:background "red"
:foreground "blue" :stipple ,stipple))))
```
The closest thing i got was using w32_draw_rectangle
inside w32_draw_glyph_string_background
but for some reason it freezes and crashes after evaling
the snippet, I'm not sure if it is related to the way I did it or is
anything related to GC.

Below this mail can you get the patch for test it
(Also i'm sorry if the patch is too long i accidentally
formatted it with clang-format)

Also can i ask what is the purpose of this line?
```
# include "bitmaps/gray.xbm"
```

Thanks.