Make uname return an error on windows instead of failing to compile because the function doesn't exist
Make uname return an error on windows instead of failing to compile because the function doesn't exist

csrwng/go-dockerclient,deepglint/go-dockerclient,liron-l/go-dockerclient,jandre/go-dockerclient,42wim/go-dockerclient,achanda/go-dockerclient,mrunalp/go-dockerclient,hpcloud/go-dockerclient,eliasgs/go-dockerclient,bfosberry/go-dockerclient,ybogdanov/go-dockerclient,styner32/go-dockerclient,ncdc/go-dockerclient,davidstack/go-dockerclient,fsouza/go-dockerclient,giantswarm/go-dockerclient,gambol99/go-dockerclient,zenoss/go-dockerclient,lindenlab/go-dockerclient,ibuildthecloud/go-dockerclient,ncdc/go-dockerclient,paulbellamy/go-dockerclient,bboreham/go-dockerclient,freeformz/go-dockerclient,daniel-garcia/go-dockerclient,jefferai/go-dockerclient,tarsisazevedo/go-dockerclient,thomasv314/go-dockerclient,derekwaynecarr/go-dockerclient,rancher/go-dockerclient,brk3/go-dockerclient,davidstack/go-dockerclient,csrwng/go-dockerclient,codekitchen/go-dockerclient,cloudimmunity/go-dockerclientx,samuelkarp/go-dockerclient,swagiaal/go-dockerclient,dcbw/go-dockerclient-dcbw,tarsisazevedo/go-dockerclient,bradgignac/go-dockerclient,orivej/go-dockerclient,mrunalp/go-dockerclient,hpcloud/go-dockerclient,brk3/go-dockerclient,w4ngyi/go-dockerclient,orivej/go-dockerclient,ibuildthecloud/go-dockerclient,bfosberry/go-dockerclient,flowlo/go-dockerclient,rancher/go-dockerclient,styner32/go-dockerclient,ybogdanov/go-dockerclient,slene/go-dockerclient,dcbw/go-dockerclient