git: openjdk/mobile: 8234689: facilitate writing additional custom attributes in a class file

[duke]

Changeset: 589f2356
Author:    Jonathan Gibbons <jjg at openjdk.org>
Date:      2019-12-09 12:27:57 +0000
URL:       https://git.openjdk.java.net/mobile/commit/589f2356

8234689: facilitate writing additional custom attributes in a class file

Reviewed-by: jlahoda

! src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/ClassWriter.java
+ test/langtools/tools/javac/classwriter/ExtraAttributes.java