RFR(XS) 8033445: Add test case for calling default methods from JNI

[Stas Smirnov]

Hello,

Please review this fix for JDK-8033445. Also, I need a sponsor for this 
fix, who can push it.

As a fix for JDK-8033445 a new set of tests has been developed to call 
default methods from JNI and verify the result.

Open webrev: http://cr.openjdk.java.net/~stsmirno/8033445/webrev.00/ 
<http://cr.openjdk.java.net/%7Estsmirno/8033445/webrev.00/>

JBS bug: https://bugs.openjdk.java.net/browse/JDK-8033445

Tested: JPRT
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Best regards,
Stas Smirnov

Stas Smirnov | Java VM Runtime SQE
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