Enable bytecode tracing in ART FI

Trace bytecode execution in Fast Interpreter similar to
other interpreters.

Update TraceExecutionEnabled function to switch on tracing.

Change-Id: Icabc17871c8198b11cd4c3dbfaa901e4fbf67946
Signed-off-by: Serguei Katkov <serguei.i.katkov@intel.com>