TestCasePacker.ps1:

- The only parameter required for this script is now the test suite version.  All other
  parameters are generated relative to the location of this script
- This script now generates the XML'ized test cases directly to website\resources\scripts\testcases\.
  Likewise, it copies the test harness taken from test\harness\* to website\resources\scripts\global\
- Added tons of error checking and we now emit the current generation status to stdout
- Made the script more generic in the sense that it can take arbitrary directories under test\suite\*
  containing ES5 test chapters.  Previous behavior was it was looking for test chapters directly under website\