hg: jdk9/dev/nashorn: 8130234: Get rid of JSType.isNegativeZero

[attila.szegedi at oracle.com]

Changeset: 1172aca37bba
Author:    attila
Date:      2015-07-02 10:55 +0200
URL:       http://hg.openjdk.java.net/jdk9/dev/nashorn/rev/1172aca37bba

8130234: Get rid of JSType.isNegativeZero
Reviewed-by: hannesw, lagergren

! src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/FoldConstants.java
! src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/parser/Lexer.java
! src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/JSType.java
! src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/OptimisticReturnFilters.java