- (dtucker) [contrib/cygwin/README contrib/cygwin/ssh-host-config
   contrib/cygwin/ssh-user-config] Modernizes and improve readability of
   the Cygwin README file (which hasn't been updated for ages), drop
   unsupported OSes from the ssh-host-config help text, and drop an
   unneeded option from ssh-user-config.  Patch from vinschen at redhat com.