hg: jdk/jdk: 8234211: allow discoverable javac plugins to be invoked by default

[jonathan.gibbons at oracle.com]

Changeset: 8d507e815358
Author:    jjg
Date:      2019-12-09 10:44 -0800
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/8d507e815358

8234211: allow discoverable javac plugins to be invoked by default
Reviewed-by: jlahoda

! src/jdk.compiler/share/classes/com/sun/source/util/Plugin.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/api/BasicJavacTask.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/main/Main.java
+ test/langtools/tools/javac/plugin/AutostartPlugins.java