[11] RFR(XS) 8207380: compiler/graalunit/JttLangMTest.java timeout

[Ekaterina Pavlova]

compiler/graalunit/JttLangMTest.java test runs set of org.graalvm.compiler.jtt.lang.Math graal unit tests.
Math_log and Math_sqrt are time consuming tests (takes up to 2 mins on fast machine) and
could result in timeout on slow machines. The change divides this test in two tests.

  
     JBS: https://bugs.openjdk.java.net/browse/JDK-8207380
  webrev: http://cr.openjdk.java.net/~epavlova//8207380/webrev.00/index.html
testing: tested by running new tests on the machine on which previous JttLangMTest.java test did timeout.


Thanks,
-katya

p.s.
  Igor Ignatyev volunteered to sponsor this change.