[9] RFR(M): 8151280: update hotspot tests to use vm.compMode instead of their own logic

[Tatiana Pivovarova]

Hello,

could you please review this patch?

This review request covers two bugs:
  - 8151280: update hotspot tests to use vm.compMode instead of their 
own logic [1]
  - 8145848: Update hs compiler tests to get VM mode using 
j.t.l.Platform [2]
Also it relays on bug fix for 8132919 [3] which I posted recently [4]

Summary:
it's possible now to rely on @requires expressions to choose vm.compMode
At the moment several compiler tests parse java.vm.info property to get 
VM mode. It could be done using j.t.l.Platform.

This patch has been contributed by Igor Ignatyev.

Tested on on Linux-x86 and Solaris sparc

top level webrev: 
http://cr.openjdk.java.net/~iignatyev/8145848/top/webrev.00/
hotspot webrev: 
http://cr.openjdk.java.net/~iignatyev/8145848/hotspot/webrev.00/
bugs: [1] [2]

[1] https://bugs.openjdk.java.net/browse/JDK-8151280
[2] https://bugs.openjdk.java.net/browse/JDK-8145848
[3] https://bugs.openjdk.java.net/browse/JDK-8132919
[4] 
http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2016-June/023599.html

Thanks,
Tatiana
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