cygwin 3.6.9-1

[Corinna Vinschen]

The following packages have been uploaded to the Cygwin distribution:

* cygwin-3.6.9-1
* cygwin-devel-3.6.9-1
* cygwin-doc-3.6.9-1

Wondering why there's no 3.6.8?  I screwed up and had to bump
the version number twice *rolleyes*


Fixes:
------

- Fix conhost.exe crash in pseudo console.

- Drop CSI?9001h (win32-input-mode) sequence from pseudo console
  output so that Ctrl-C correctly works.

- Fix the problem that Ctrl-C does not work for foregrounded
  'cat | sleep 100 &' command in tcsh.

- Fix the problem that Ctrl-C does not work for foregrounded
  'cat | cmd &' command.

- Drop CSI?1004h (enable focus event report) sequence from pseudo
  console output so that CSI I/O are not sent to the foreground
  process.

- Fix inheriting typeahead input after Ctrl-C.

- Apply 7 separate patches that fix out-of-order key input.
  Addresses: https://github.com/git-for-windows/git/issues/5632

- Fix pty bugs regarding GDB with pty.

- Add missing errno setting on error that poll() is called for closed
  file descriptor.
  Addresses: https://cygwin.com/pipermail/cygwin/2026-April/259602.html