RFR 8169389 : Use a bitmap to control StackTraceElement::toString format and save footprint

[Mandy Chung]

> On Dec 13, 2016, at 12:53 PM, Brent Christian <brent.christian at oracle.com> wrote:
> 
> Thank you, Mandy and Daniel.
> 
> As a point of interest, automated testing uncovered a couple things I had to change before pushing:
> 
> http://hg.openjdk.java.net/jdk9/dev/hotspot/rev/accf1676e416
> 
> * Updated the CHECK_OFFSET line, so fastdebug builds
> 
> http://hg.openjdk.java.net/jdk9/dev/jdk/rev/ddc8f2ae290b
> 
> * In the test case, only check for a classloader named 'app' if we are using the system classloader.  This is usually the case, but not when running regtests using the 'make' target (URLClassLoader).

Thanks for the update.  Looks fine to me.

Mandy