RFR(S): 8173399 - Jittester: sources should be aligned with latest product state

[Dmitrij Pochepko]

Hi,

please review small fix for 8173399 - Jittester: sources should be 
aligned with latest product state

A jittester makefile is updated according to latest jigsaw requirements.

Also, -XX:-PrintWarnings is added to vm invocations for clearer test 
logs which will provide more stable behavior.

webrev: http://cr.openjdk.java.net/~dpochepk/8173399/webrev.01/

CR: https://bugs.openjdk.java.net/browse/JDK-8173399


I've tested this fix on linux-amd64.


Thanks,

Dmitrij