如何覆盖位于模块文件夹中的备用模板（.tpl.php）文件的路径？

I want to create a custom theme for a specific page. (e.g. www.domain.com/roster/%/home) For this purpose I've created the following file and placed it within the templates folder of my current theme (bartik): page--roster--home.tpl.php.

It overrides the default theme as desired, but I want to keep all files related to my module within its folder.

My question is, how can I place the file within my module's folder and still have Drupal 7 pick it up?

use Theme()

return theme('some_theme_function_template', array('aValues' => $someArray));

Then you need to use the theme hook like this:

function my_module_name_theme() {
    return array(
        'some_theme_function_template' => array(
            'template' => 'mytheme',
        ),
    );
}

It now searches for mytheme.tpl.php in the root of you're module.