cygwin 3.3.1-1

[Corinna Vinschen]

The following packages have been uploaded to the Cygwin distribution:

* cygwin-3.3.1-1
* cygwin-devel-3.3.1-1
* cygwin-doc-3.3.1-1

Bug Fixes
---------

- Fix a fix in 3.3.0 which broke Vista / Server 2008 by using a Windows
  function introduced with Windows 7 only, namely TryAcquireSRWLockExclusive.
  Addresses: https://cygwin.com/pipermail/cygwin/2021-October/249732.html