hg: code-tools/jtreg: 7902379: Fix/improve support for Windows Subsystem for Linux

[jonathan.gibbons at oracle.com]

Changeset: e0a068d9e86b
Author:    jjg
Date:      2019-02-04 14:35 -0800
URL:       http://hg.openjdk.java.net/code-tools/jtreg/rev/e0a068d9e86b

7902379: Fix/improve support for Windows Subsystem for Linux

! src/share/classes/com/sun/javatest/regtest/config/JDK.java
! src/share/classes/com/sun/javatest/regtest/config/OS.java
! src/share/classes/com/sun/javatest/regtest/exec/ShellAction.java
! src/share/classes/com/sun/javatest/regtest/tool/Tool.java
! src/share/classes/com/sun/javatest/regtest/tool/i18n.properties
! src/share/doc/javatest/regtest/faq.md
+ test/shell/TEST.ROOT
+ test/shell/lib1/p1/C1.java
+ test/shell/lib2/p2/C2.java
+ test/shell/libenv/env.sh
+ test/shell/testShell.gmk
+ test/shell/tests/MapUtils.java
+ test/shell/tests/Test1.java
+ test/shell/tests/Test2.sh
+ test/shell/tests/Test234.java
+ test/shell/tests/Test3.sh
+ test/shell/tests/Test4.sh