hg: jdk9/sandbox/langtools: 8136494: Update "@since 1.9" to "@since 9" to match java.version.specification

[chris.hegarty at oracle.com]

Changeset: d7cb87cc129c
Author:    iris
Date:      2016-01-19 20:32 -0800
URL:       http://hg.openjdk.java.net/jdk9/sandbox/langtools/rev/d7cb87cc129c

8136494: Update "@since 1.9" to "@since 9" to match java.version.specification
Reviewed-by: alanb, chegar, lancea

! src/java.compiler/share/classes/javax/lang/model/SourceVersion.java
! test/tools/javadoc/sampleapi/lib/sampleapi/generator/DocCommentGenerator.java