hg: jdk/sandbox: 3 new changesets

[chris.hegarty at oracle.com]

Changeset: 7898edac8a27
Author:    naoto
Date:      2020-03-12 08:31 -0700
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/7898edac8a27

8216332: Grapheme regex does not work with emoji sequences
Reviewed-by: rriggs

! src/java.base/share/classes/java/util/regex/Grapheme.java
+ test/jdk/java/util/regex/GraphemeTestCases.txt
! test/jdk/java/util/regex/RegExTest.java

Changeset: 910e8900f11d
Author:    rriggs
Date:      2020-03-12 11:54 -0400
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/910e8900f11d

8240704: CheckHandles.java failed "AssertionError: Handle use increased by more than 10 percent."
Reviewed-by: dfuchs

! test/jdk/java/lang/ProcessBuilder/checkHandles/CheckHandles.java

Changeset: e713e8a312ea
Author:    rriggs
Date:      2020-03-12 11:57 -0400
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/e713e8a312ea

8240957: Clarify BadAttributeValueExpException readObject method
Reviewed-by: bpb

! src/java.management/share/classes/javax/management/BadAttributeValueExpException.java