Add tests for commit e53b0858c32b845482
Remove debugging instrumentation
Doc fixes for ffi/unsafe/atomic
racket/gui gtk: catch key events at frame level

In case no subwindow within a frame can accept the keyboard
focus, now the frame itself can accept them (for consumption
by `on-subwindow-char').
bitmap-dc% respective alpha channel in get/set-pixel
fix typos in example code
fix unstable/socket loading in windows
  closes PR 13743
db: temporary workaround for SSL one-record-per-write issue
allow #f as the min-width / min-height init arg to area-containers
add #:close-button?, #:canvas-min-width, and #:canvas-min-height
arguments to in-terminal
adjust package manager gui to separate out (and make simpler looking)
the package installer

and make DrRacket have two separate menu items, one for installing a package
(which now looks simpler again) and one for doing all of the things you can
currently do with the package system in a GUI
pkg-info-orig-info seems to also possibly be (cons 'file ...).
slideshow/pict: add 'outline style for `text'
slideshow/pict: fix `text' angle and superscript/subscript modes
racket/generic: fix kw args with #:defaults

Closes PR 13737
fix build for Windows
move the slideshow/pict library to its own collection

also, adjust all of the requires in the tree to point to the pict
collection
disable slideshow's addition (to drracket) of pict value rendering
add responsible for collects/pict