hg: valhalla/valhalla: lworld: Allow empty values under the option -XDallowEmptyValues

[srikanth.adayapalam at oracle.com]

Changeset: 31b9bbb46aa9
Author:    sadayapalam
Date:      2018-07-04 11:31 +0530
URL:       http://hg.openjdk.java.net/valhalla/valhalla/rev/31b9bbb46aa9

lworld: Allow empty values under the option -XDallowEmptyValues

! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Attr.java
+ test/langtools/tools/javac/valhalla/lworld-values/EmptyValueTest.java
+ test/langtools/tools/javac/valhalla/lworld-values/EmptyValueTest.out