hg: jdk/sandbox: 8243396: Add a brief description of argfiles to the javadoc help output

[chris.hegarty at oracle.com]

Changeset: 6d2c3c2fcb43
Author:    jjg
Date:      2020-05-19 10:11 -0700
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/6d2c3c2fcb43

8243396: Add a brief description of argfiles to the javadoc help output
Reviewed-by: prappo

! src/jdk.javadoc/share/classes/jdk/javadoc/internal/tool/Start.java
! src/jdk.javadoc/share/classes/jdk/javadoc/internal/tool/ToolOptions.java
! src/jdk.javadoc/share/classes/jdk/javadoc/internal/tool/resources/javadoc.properties
+ test/langtools/jdk/javadoc/tool/CommandLineHelpTest.java