[themes] Themeswitcher

I have finished the first part of the corrections to the themeswitcher module. Results are posted here: http://drupal.org/node/82340 I found the original array handling too complex, so I simplified it greatly. But that really reflects my limits as a programmer rather than the value of the original code. May need to put in a check to ensure that count($themes) > 1, otherwise the theme browser block is useless. Do we still need a themes overview page that shows all available themes and ties them to themeswitcher? - Ken Rickard agentrickard