hg: jdk/jdk13: 8225748: Use SHA-256 for javap classfile checksum

[jonathan.gibbons at oracle.com]

Changeset: bc5a0508253c
Author:    jjg
Date:      2019-06-18 11:52 -0700
URL:       http://hg.openjdk.java.net/jdk/jdk13/rev/bc5a0508253c

8225748: Use SHA-256 for javap classfile checksum
Reviewed-by: mchung

! src/jdk.compiler/share/classes/com/sun/tools/javac/main/Main.java
! src/jdk.jdeps/share/classes/com/sun/tools/javap/JavapTask.java
! src/jdk.jdeps/share/classes/com/sun/tools/javap/resources/javap.properties
! test/langtools/tools/javac/T6942649.java
! test/langtools/tools/javap/T4884240.java