hg: jdk/jdk: 8209963: source file mode for JVM should provide a hook to locate the source file

[jonathan.gibbons at oracle.com]

Changeset: 904c4e07cc22
Author:    jjg
Date:      2018-09-26 16:23 -0700
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/904c4e07cc22

8209963: source file mode for JVM should provide a hook to locate the source file
Reviewed-by: darcy

! src/jdk.compiler/share/classes/com/sun/tools/javac/launcher/Main.java
! test/langtools/tools/javac/launcher/SourceLauncherTest.java