Just a little 'ol activity manager permission change.

We no longer enforce permissions for applications that are accessing
their own components.  This allows an application to require a permission
on one of its components that it does not itself have.  This is useful
for example with the new advanced widgets, which require a system-only
permission on the implementing service to ensure the app's data stays
private but it is nice to allow the application to still touch its own
widget service.

Change-Id: I5d61930a083816919545870039ad191314ed48c6