client: don't send O_SYNC to the server when a file is opened with O_DIRECT
client: don't send O_SYNC to the server when a file is opened with O_DIRECT



gurkerl83/millipede-xtreemfs,gurkerl83/millipede-xtreemfs,gurkerl83/millipede-xtreemfs,gurkerl83/millipede-xtreemfs,gurkerl83/millipede-xtreemfs,gurkerl83/millipede-xtreemfs,gurkerl83/millipede-xtreemfs