Added a slight hack to drupal's bootstrap to not require symlinks to create additional sites.

Modified site creation tool to use new method: add records to .htaccess. 
THE CHANGES TO .htaccess.sample MUST BE COPIED TO YOUR .HTACCESS FILE!

git-svn-id: file:///tmp/wdn_thm_drupal/trunk@239 20a16fea-79d4-4915-8869-1ea9d5ebf173