120 columns in AKSIPUserAgent
120 columns in AppController
120 columns in AccountController
120 columns in ActiveAccountViewController
120 columns in call controllers and views
120 columns in preferences controllers
120 columns in helper classes
120 columns in plug-ins
Fix string format warnings
Update readme with coding style exceptions
Set arch to x86_64 only, minimum deployment target to OS X 10.7
Fix compiler warning

NSUInteger is unsigned long on 64-bit
On 64-bit only there's no need to cast to long types
Automatic property synthesize
Update OS version in pjsip library names
Add missing #import
Remove commented code
Convert sources to support ARC
Use weak references for IBOutlets
Nullify view controllers

Incoming Call View Controller, Active Call View Controller, and Ended
Call View Controller have bindings in the UI to Call Controller's
properties. When Call Controller is allocated on call window close,
those view controller's still doing their KVO and an error is
issued. By this nullifying we release view controllers before Call
Controller is released.