RFR(T)[12] : 8178798 : Two compiler/aot/verification/vmflags tests fail by timeout with UseAVX=3

[Igor Ignatyev]

http://cr.openjdk.java.net/~iignatyev//8178798/webrev.00/index.html
> 3 lines changed: 2 ins; 0 del; 1 mod; 

Hi all,

could you please review this small and trivial patch for aot jtreg tests? aot tests timeout when they are run w/ Xcomp as jaotc execution becomes too slow, the patch forces jaotc to be always run w/ Xmixed.

webrev: http://cr.openjdk.java.net/~iignatyev//8178798/webrev.00/index.html
JBS: https://bugs.openjdk.java.net/browse/JDK-8178798
testing: test/hotspot/jtreg/compiler/aot w/ and w/o Xcomp

Thanks,
-- Igor