wsim now supports directories
Created by: rosethompson
- Changed name of cache parameter NUMLINES to NUMSETS to better match book.
- Changed name CacheWriteData to WriteData.
- Fixed bug so that wsim can start logging after a given number of instructions.
- Simplified wsim so it automatically figures out if the second parameter is a testsuite or an elf file.
- Updated readme to reflect changes to wsim.
- Got the directory mode wsim working!
- Updated readme.