RFR(M) : 8184738: CTW fails with assert(!method->method_holder()->is_not_initialized()) failed: method holder must be initialized

[Igor Ignatyev]

> http://cr.openjdk.java.net/~iignatyev//8184738/webrev.00
> 547 lines changed: 220 ins; 166 del; 161 mod; 


Hi all,

could you please review this patch for CTW library?

problem: we didn't run <clinit> for some classes, it might have lead to assert in native code during compilation.
fix: now we load and init a class inside try-catch block, so if there is any issue w/ class loading/initialization we will report an warning and skip this class.

as a part of this patch, I've also done some refactoring (mainly in *Entry classes) to make code more readable and remove duplication.

jbs: https://bugs.openjdk.java.net/browse/JDK-8184738
webrev: http://cr.openjdk.java.net/~iignatyev//8184738/webrev.00
testing: hotspot/test/applications/ctw, hotspot/test/testlibrary_tests/ctw

Thanks,
-- Igor