hg: jdk9/sandbox/langtools: Added back env variable option handling.

[andreas.lundblad at oracle.com]

Changeset: 4b90089bdf1c
Author:    alundblad
Date:      2016-09-22 22:49 +0200
URL:       http://hg.openjdk.java.net/jdk9/sandbox/langtools/rev/4b90089bdf1c

Added back env variable option handling.

! src/jdk.compiler/share/classes/com/sun/tools/javac/api/JavacTool.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/code/ModuleFinder.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Enter.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/file/BaseFileManager.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/file/JavacFileManager.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/file/Locations.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/main/JavaCompiler.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/main/Main.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/util/JavacContext.java
! src/jdk.javadoc/share/classes/jdk/javadoc/internal/tool/Start.java