lotfw: initial

lotf on web
tail: fix last 0 line handling
lotfd: fix dgram output
go: go fmt github.com/chamaken/lotf/...

Thanks to shurcooL, I was able to grasp I should gofmt.
And update env refering http://blog.golang.org/go-fmt-your-code
lotf cmd: use glog
tail: fix nil pointer reference

in case of call WaitNext() repeatedly on closed.
tail: implement handleParentDisappear()
test: remove temporary dirs first

I was confised in some tests.
tail: invalidate watcher by Close()