fs: add multi user watcher for callbacks
fs: add multi user watcher for callbacks

acbodine/koding,sinan/koding,alex-ionochkin/koding,sinan/koding,cihangir/koding,usirin/koding,cihangir/koding,alex-ionochkin/koding,acbodine/koding,jack89129/koding,usirin/koding,drewsetski/koding,usirin/koding,usirin/koding,cihangir/koding,usirin/koding,jack89129/koding,drewsetski/koding,andrewjcasal/koding,andrewjcasal/koding,acbodine/koding,mertaytore/koding,kwagdy/koding-1,kwagdy/koding-1,szkl/koding,acbodine/koding,jack89129/koding,szkl/koding,koding/koding,gokmen/koding,drewsetski/koding,drewsetski/koding,szkl/koding,cihangir/koding,alex-ionochkin/koding,sinan/koding,kwagdy/koding-1,gokmen/koding,kwagdy/koding-1,alex-ionochkin/koding,szkl/koding,rjeczalik/koding,sinan/koding,alex-ionochkin/koding,mertaytore/koding,sinan/koding,gokmen/koding,cihangir/koding,szkl/koding,koding/koding,jack89129/koding,rjeczalik/koding,jack89129/koding,cihangir/koding,drewsetski/koding,jack89129/koding,mertaytore/koding,koding/koding,cihangir/koding,rjeczalik/koding,drewsetski/koding,koding/koding,rjeczalik/koding,sinan/koding,sinan/koding,andrewjcasal/koding,alex-ionochkin/koding,mertaytore/koding,andrewjcasal/koding,kwagdy/koding-1,rjeczalik/koding,jack89129/koding,andrewjcasal/koding,usirin/koding,gokmen/koding,rjeczalik/koding,mertaytore/koding,usirin/koding,drewsetski/koding,gokmen/koding,gokmen/koding,rjeczalik/koding,gokmen/koding,cihangir/koding,acbodine/koding,gokmen/koding,kwagdy/koding-1,koding/koding,kwagdy/koding-1,koding/koding,acbodine/koding,sinan/koding,koding/koding,mertaytore/koding,koding/koding,jack89129/koding,andrewjcasal/koding,alex-ionochkin/koding,szkl/koding,usirin/koding,andrewjcasal/koding,mertaytore/koding,mertaytore/koding,drewsetski/koding,alex-ionochkin/koding,rjeczalik/koding,acbodine/koding,szkl/koding,kwagdy/koding-1,szkl/koding,andrewjcasal/koding,acbodine/koding