mockner [Mon, 13 Jun 2016 13:47:21 -0400] rev 39277
8157490: JCK test vm/jni/DefineClass/dfcl001/dfcl00101m1/dfcl00101m1 crashes when run with -Xlog:classload=info
Summary: null stream->source() no longer causes error with -Xlog:class+load
Reviewed-by: lfoltan, coleenp
coleenp [Mon, 13 Jun 2016 09:02:47 -0400] rev 39275
8158237: JVMTI hides critical debug information for memory leak tracing
Summary: remove _backtrace as hidden field, original problem no longer exists
Reviewed-by: sspitsyn, jiangli