Fixed issue 148 and problems with i/d cache address loggers.
Created by: rosethompson
- Possible fix for issue 148.
- Now have logging of i/d cache addresses, but the performance counter reports are x's.
- Restored performance counter reports.
- Now reports if there is a hit or miss.
- Disable loggers by default.
- Modified the testbench to not use the loggers for unsupported configurations.