RFR(S): 8153885: [TESTBUG] few regression tests failed after 8151880 changes

[Nils Eliasson]

Hi,

Please review this fix.

Summary:
1) Add -XX:-UseCounterDecay to three tests that where using the 
compile()-method through the getBCI method.
2) Fix CompileCommand patterns and comments still using the old 
SimpleTestCase$Helper pattern.

Testing:
Running all compiler JTREG tests on linux-x64.

Bug: https://bugs.openjdk.java.net/browse/JDK-8153885
Webrev: http://cr.openjdk.java.net/~neliasso/8153885/webrev.01/

Regards,
Nils Eliasson