Pressing "back" from main screen throws exception if TaskSwitcher is installed

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Install TaskSwitcher
2. Start BookWorm
3. Press "back"

What is the expected output? What do you see instead?
Expected to see home screen, instead received force stop.

Please use labels and text to provide additional information.

Looking at the code in main.java, it sends the main activity the home intent 
category. Normally this displays the home screen without closing the 
application, where on most apparently, it appears to close the app. With 
TaskSwitcher, it looks like a new intent handler is provided which causes a 
permissions exception. There are at least 2 solutions (other than removing the 
conflicting app): add the missing permission or change the back button to call 
finish. 

Original issue reported on code.google.com by [email protected] on 30 Jul 2010 at 1:58