TestingParty: Write a test for menu callbacks in different files

We need a test for menu callbacks in different files. Here's what needs to happen:

A test module needs to be created with two functions: return_hi, which just returns 'hi', and a hook_menu.
The test module needs an including one function, return_bye, which returns 'bye'.
The hook_menu needs to contain three menu items: one who's page and access calbacks are return_hi, but who's title callback is return_bye, one who's page and title callbacks are return_hi, but who's access callback is return_bye, and one who's access and title callbacks are return_hi and who's page callback is return_bye.

Then, the test needs to call all of these pages and make sure the appropriate thigns happen.

Also please think of better functoin names.