[Bug #438050]
Include sys/poll.h if it was found by the configure script. The OpenGroup
spec says poll.h is the correct header file to use, so that file is
preferred.
diff --git a/Modules/selectmodule.c b/Modules/selectmodule.c
index 31ac9b0..c6e4b86 100644
--- a/Modules/selectmodule.c
+++ b/Modules/selectmodule.c
@@ -21,8 +21,10 @@
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
-#ifdef HAVE_POLL_H
+#if defined(HAVE_POLL_H)
#include <poll.h>
+#elif defined(HAVE_SYS_POLL_H)
+#include <sys/poll.h>
#endif
#ifdef __sgi