hg: jdk/sandbox: Introduce TARGET_RELEASE.

[magnus.ihse.bursie at oracle.com]

Changeset: 68551971e691
Author:    ihse
Date:      2020-03-13 10:24 +0100
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/68551971e691

Introduce TARGET_RELEASE.

! make/CompileInterimLangtools.gmk
! make/CompileInterimRmic.gmk
! make/CompileJavaModulesNashorn.gmk
! make/CompileToolsHotspot.gmk
! make/CompileToolsJdk.gmk
! make/JrtfsJar.gmk
! make/ToolsLangtools.gmk
! make/common/JavaCompilation.gmk
- make/common/SetupJavaCompilers.gmk
! make/gendata/Gendata-jdk.compiler.gmk
! make/gendata/GendataBreakIterator.gmk
! make/hotspot/ide/CreateVSProject.gmk
! make/test/BuildFailureHandler.gmk
! make/test/BuildMicrobenchmark.gmk