If there are no disk space enough to write UL, it does not report. So the user cannot know lack of logs timely.

`LogFileStreamOutput::write()` uses `jio_fprintf()` and `fflush()` to write log. However return values of them would not be checked.
We should check them, and should report what happened if error occurred.


How to reproduce on Linux:

1. Mount tmpfs with 512K

```
$ mkdir /tmp/tmp
$ mount -t tmpfs -o size=512k tmpfs /tmp/tmp
```

2. Run `java` with `-Xlog`

```
$ java -Xlog:all=trace:file=/tmp/tmp/all.log --version
```