[+cc Peter Rosin] Reference: <http://debbugs.gnu.org/cgi/bugreport.cgi?bug=7862>
It has been a long time since this report, and regular testing by Peter hasn't (AFAIK) tickled similar failures in any modern Automake+Cygwin combination. So I'm closing this report, to avoid keeping the bug tracker cluttered. Peter, if I'm wrong and you're indeed seeing similar issues, feel free to re-open this report. Thanks, Stefano