hg: jdk9/sandbox/jdk: 8148730: Add @since tags in new String concat APIs

[chris.hegarty at oracle.com]

Changeset: 8faf1aec77a9
Author:    shade
Date:      2016-02-01 15:11 +0300
URL:       http://hg.openjdk.java.net/jdk9/sandbox/jdk/rev/8faf1aec77a9

8148730: Add @since tags in new String concat APIs
Reviewed-by: alanb

! src/java.base/share/classes/java/lang/invoke/StringConcatException.java
! src/java.base/share/classes/java/lang/invoke/StringConcatFactory.java