RFR 8182684: Further clarify InputStream#available()

[Alan Bateman]

On 07/03/2018 18:57, Brian Burkhalter wrote:
> https://bugs.openjdk.java.net/browse/JDK-8182684
> http://cr.openjdk.java.net/~bpb/8182684/webrev.00/
>
> Unfortunately the change is somewhat obfuscated by reformatting. The main changes are the first sentence and the fourth paragraph.
>
>
Looks good okay it doesn't really change anything as available has 
always been allowed to return 0, even if not at end of input.

-Alan