hg: jdk/sandbox: 8207055: Make javac -help output for -source and -target more informative

[chris.hegarty at oracle.com]

Changeset: e0bce2635ec5
Author:    darcy
Date:      2018-07-11 16:12 -0700
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/e0bce2635ec5

8207055: Make javac -help output for -source and -target more informative
Reviewed-by: jjg

! src/jdk.compiler/share/classes/com/sun/tools/javac/code/Source.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/Target.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/main/Option.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/resources/javac.properties
! test/langtools/jdk/javadoc/tool/modules/ReleaseOptions.java
! test/langtools/tools/javac/modules/AddLimitMods.java