Allow functionality without theme modification

Currently the installation instructions require the modification of the theme.

This installation dependency is due to the PHPTemplate engine setting the $head_title to drupal_get_title() .' | '. variable_get('site_name') inside phptemplate_page(). The only way to modify the pattern used in the $head_title variable is within the theme via _phptemplate_variables().

However, at the very least we can have drupal_get_title() return a node’s page_title by calling drupal_set_title() inside hook_nodeapi().

Long story short…

If a user didn’t modify the theme, the node’s “Page title” would still show up in the <title> tag.