Debug testerboard.py:
    * Fixed issue with PinPoint{Rise,Fall}Time returning only
      single entry of what should be a matrix.
    * Fixed some other issues in the calls to PinPoint..
    * Undid some weird quirk that was ported from the PASCAL
      code, which didn't make sense and produced garbage results.
      (I think a bug was patched with another bug).
    * Some improvements to output formatting, better commenting.
    * This commit actually works..
Minor updates to delays.py:
    * Improved output formatting..
    * Fixed typo in call to SelfTest