Don't do fsync on unix
Don't do fsync on unix

mathstuf/vdirsyncer,hobarrera/vdirsyncer,credativUK/vdirsyncer,credativUK/vdirsyncer,hobarrera/vdirsyncer,untitaker/vdirsyncer,untitaker/vdirsyncer,tribut/vdirsyncer,untitaker/vdirsyncer,mathstuf/vdirsyncer,tribut/vdirsyncer