RFR v6 - 8027634: Support @argfiles for java command-line tool

[Mandy Chung]

> On Aug 21, 2015, at 3:46 PM, Henry Jen <henry.jen at oracle.com> wrote:
> 
> v7 is up, changes are
> 
> - Add formfeed character(\u000c) as while space character
> - Support escape \f for formfeed character in quote
> - Update java help output to include @<filepath> and -Xdisable- at files
> 
> http://cr.openjdk.java.net/~henryjen/jdk9/8027634/v7/webrev/

The diff you sent in another mail is useful for just reviewing the delta change.  That looks fine.

launcher.properties 
   @<filepath> following -splash seems a little awk but it's consistent with javac -help and that’s okay.

Thanks
Mandy