RFR (S) 8209447: vmTestbase/vm/mlvm/indy/func/jvmti/mergeCP_none2indy_b/TestDescription.java timed out

[coleen.phillimore at oracle.com]

Summary: was walking code cache for every safepoint because redefined 
methods take a long time to clear out of the code cache

See comments in bug for more details.

open webrev at http://cr.openjdk.java.net/~coleenp/8209447.01/webrev
bug link https://bugs.openjdk.java.net/browse/JDK-8209447

Tested with mach5 hs tier1-5 and tier 7 where the failures occurred.

thanks,
Coleen