cvs_search() conflicts with hook_search()

during the 5.x port (http://drupal.org/node/101150) AjK split out the search form stuff into a new function called cvs_search(). this conflicts with hook_search() (http://api.drupal.org/api/HEAD/function/hook_search for the interested reader). so, the result was a weird, empty tab on http://scratch.drupal.org/search which was screwing up some stuff. see http://drupal.org/node/105004#comment-182863 for a report on that.

attached patch just renames this form builder to cvs_search_form(). with this, s.d.o/search seems to be working fine again.