socket_wrapper: inject O_LARGEFILE to open[64|at]() if needed / release 1.3.5

On 32bit systems this is normally done by glibc if _FILE_OFFSET_BITS is 64, but with socket wrapper we don't want to define _FILE_OFFSET_BITS=64, as we need to overload open64 explicitly. But we need to inject O_LARGEFILE for being transparent to the application.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15251

Signed-off-by: Stefan Metzmacher metze@samba.org