Update to 1.4.14b.

Update to 1.4.14b.

From their change log:
 o Fix memory-leak of signal handler array with kqueue. [backport]
 o Make evutil_make_socket_nonblocking() leave any other flags alone.
 o Adjusted fcntl() retval comparison on evutil_make_socket_nonblocking().
 o Re-add event_siglcb; some old code _was_ still using it. :(
 o Fix a free(NULL) in min_heap.h
 o Clean up properly when adding a signal handler fails.

Also a local change to use an int rather than a long for fcntl().

ok guenther deraadt