Log Message:
Update to 0.78:

0.78 Jul 19, 2005

- If an overloaded object returned false in boolean context, then it
would always fail "can" tests.  Patch by Chi-Fung Fan.

0.77 Apr 29, 2005

- Neither --xs or --pm worked with the Makefile.PL the way they were
supposed to.  Reported by Doug Treder.

- Moved source to my personal SVN repo.
https://svn.urth.org/svn/Params-Validate

- Updated ppport.h, which allows XS version to work with 5.00504.
This was broken since 0.75, at least.