RFR(XS): JDK-4515292: ReferenceType.isStatic() returns true for arrays

[Fredrik Arvidsson]

Hi please review this minor JDI fix.

This bug was found when investigating failing JDI tests. According to 
the JavaDoc all calls to ReferenceType when it is an array type should 
return false for isStatic().

Webrev: http://cr.openjdk.java.net/~farvidsson/4515292/webrev.00/ 
<http://cr.openjdk.java.net/%7Efarvidsson/4515292/webrev.00/>
Jira: https://bugs.openjdk.java.net/browse/JDK-4515292

Cheers
/Fredrik