RFR(XS): 8030783: Provide regression test for 8026478: -XX:+VerifyAdapterSharing is broken

[Albert Noll]

Hi,

could I get reviews for this small patch?

bug: https://bugs.openjdk.java.net/browse/JDK-8030783
webrev: http://cr.openjdk.java.net/~anoll/8030783/webrev.00/


The patch adds a regression test for: 
https://bugs.openjdk.java.net/browse/JDK-8030783.

VerifyAdapterSharing fails during VM startup. Consequently, "-version" 
already triggers the
bug. I added -Xcomp to make sure compilers are used. 
-XX:+IgnoreUnrecognizedVMOptions
makes sure that the test does not fail for builds where 
VerifyAdapterSharing is not defined
(e.g., product build).

Many thanks,
Albert