[9] RFR (XS): 8058578: -XX:+TraceDependencies is broken for call_site_target_value dependency type

[Vladimir Ivanov]

http://cr.openjdk.java.net/~vlivanov/8058578/webrev.00/
https://bugs.openjdk.java.net/browse/JDK-8058578

-XX:+TraceDependencies logic doesn't handle call_site_target_value 
dependencies right. Both arguments are oops, so they should be extracted 
using Dependencies::DepStream::argument_oop().

Testing: ran octane w/ -XX:+TraceDependencies.

Thanks!

Best regards,
Vladimir Ivanov