Add Java 8 deprecated + unsafe signatures

```
Since build 106, Java 8 is future complete. Time to add signatures for 
deprecation and unsafe.

For now the unsafe ones will be a clone of Java 7's although there might be new 
ones! I should check the API for charset, locale, and timezone problems.
```

Original issue reported on code.google.com by `uwe.h.schindler` on 26 Oct 2013 at 8:12
