[9] RFR 7084904: Introspector returns isX() from base package-private class that throws exception

[sergey malenkov]

Hello,

Could you please review the following fix:
http://cr.openjdk.java.net/~malenkov/7084904.9.0/
http://bugs.openjdk.java.net/browse/JDK-7084904
Add useful test.

Thanks,
SAM