RFR: 8136494 Update "@since 1.9" to "@since 9" to match java.specification.version

[Jonathan Gibbons]

On 01/07/2016 08:46 AM, Chris Hegarty wrote:
> Just to note there are a number of '@since 1.9’ ’s in the langtools
> src  [1], but I guess these can be done separately, if you like.
>
> -Chris.

Chris,

We did the langtools "@since 1.9" tags yesterday.
http://hg.openjdk.java.net/jdk9/dev/langtools/rev/70ac078df098

-- Jon