The file 'rake/gempackagetask' is obsolete and no longer supported, according to an error message I got when I tried to run rake. Use 'rubygems/package_task' instead.
Added the pkg directory to .gitignore because it was getting created when I ran 'rake' and we should not commit it to the repository.
Remove 4-year-old test results from the repo.  That kind of thing should not be committed.
test/runner.rb: Got rid of arcane/broken Version and Release number.  Added the lib directory to the load path.  Now you can actually run the tests by running 'ruby test/runner.rb', but there are tons of errors.
xsd/datatypes.rb: Fixed a bug that was causing this gem to generate invalid date strings like '2013-01-18T15:37:1645505.8806112000020221-08:00'.  The DateTime#sec_fraction method has units of seconds in Ruby 1.9.3, not days.  I am assuming we don't care about this gem working with Ruby 1.8.
Merge pull request #6 from DavidEGrayson/pull_request_130121

Fixed usage of DateTime#sec_fraction