adding the class variable to the filter_include_template_file to allow  plugins to include templates for multiple template engines.
adding the class variable to the filter_include_template_file to allow 
plugins to include templates for multiple template engines.


git-svn-id: d0e296eae3c99886147898d36662a67893ae90b2@1508 653ae4dd-d31e-0410-96ef-6bf7bf53c507

dragonmantank/Habari,dragonmantank/Habari,dragonmantank/Habari