exec_command not working correctly in Cygwin

[eadmaster]

most Windows users would like to execute commands via cmd.exe instead of /bin/sh,
so if Cygwin is detected i suggest to change line 47 in event.c:
execlp("cmd.exe", "cmd.exe", "/c", stamp, NULL);

A test build is here:
http://eadmaster.altervista.org/pub/index.php?page=builds