RFR 8135972: Implement new tests for native libjimage library

[Sergei Pikalev]

Hello,

This is the code with new tests for libjimage native library.

A webrev with the tests is here:

http://cr.openjdk.java.net/~jlaskey/8135972/webrev.00/index.html

Please review.

Thanks,
     Sergei