hg: jdk/jdk: 8199194: Add javac support for preview features

[maurizio.cimadamore at oracle.com]

Changeset: 62b908c9f0e6
Author:    mcimadamore
Date:      2018-04-12 13:55 +0100
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/62b908c9f0e6

8199194: Add javac support for preview features
Summary: Add support for preview features and related command line options.
Reviewed-by: jjg

! src/jdk.compiler/share/classes/com/sun/tools/javac/code/Lint.java
+ src/jdk.compiler/share/classes/com/sun/tools/javac/code/Preview.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/code/Source.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/ClassFile.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/ClassReader.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/ClassWriter.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/main/Arguments.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/main/JavaCompiler.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/main/Option.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/parser/JavaTokenizer.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/parser/JavacParser.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/parser/ParserFactory.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/parser/ScannerFactory.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/resources/compiler.properties
! src/jdk.compiler/share/classes/com/sun/tools/javac/resources/javac.properties
! test/langtools/tools/javac/diags/examples.not-yet.txt
+ test/langtools/tools/javac/diags/examples/PreviewFeatureDisabled.java
+ test/langtools/tools/javac/diags/examples/PreviewFeatureDisabledPlural.java
+ test/langtools/tools/javac/diags/examples/PreviewFeatureUse.java
+ test/langtools/tools/javac/diags/examples/PreviewFilename.java
+ test/langtools/tools/javac/diags/examples/PreviewFilenameAdditional.java
+ test/langtools/tools/javac/diags/examples/PreviewPlural/Bar.java
+ test/langtools/tools/javac/diags/examples/PreviewPlural/PreviewPlural.java
+ test/langtools/tools/javac/diags/examples/PreviewPluralAdditional/Bar.java
+ test/langtools/tools/javac/diags/examples/PreviewPluralAdditional/PreviewPluralAdditional.java
+ test/langtools/tools/javac/preview/PreviewOptionTest.java
+ test/langtools/tools/javac/preview/classReaderTest/Bar.java
+ test/langtools/tools/javac/preview/classReaderTest/Client.java
+ test/langtools/tools/javac/preview/classReaderTest/Client.nopreview.out
+ test/langtools/tools/javac/preview/classReaderTest/Client.preview.out