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Summary:
The Core Data Cocoa Touch Application template (and it's descendants, other templates reference this one) uses -[NSManagedObjectContext init] to create a new NSManagedObjectContext. This method has been marked as obsolete since iOS 5 (see the NSManagedObjectContext.h header) and forces an application to use the obsolete thread confinement concurrency behavior. The guidance from Apple since iOS 5 has been to NOT use this method for new code, but to use -[NSManagedObjectContext initWithConcurrencyType:] with NSPrivateQueueConcurrencyType or NSMainQueueConcurrencyType.

Steps to Reproduce:
1. In Xcode, select New... from the File menu
2. Select Project from the submenu.
3. In the new Project wizard, select iOS Master-Detail application.
4. Hit Next
5. Give it a name and make sure "Use Core Data" is checked.
6. Save the project locally
8. When Xcode has the new project open, open "AppDelegate.m"
9. Look at the method -managedObjectContext

Expected Results:
-managedObjectContext method should create a new managed object context using the recommended initializer, initWithConcurrencyType: with either NSPrivateQueueConcurrencyType or NSMainQueueConcurrencyType as arguments.

Actual Results:
-managedObjectContext uses init to create a new context, which is obsolete and not recommended.

Version:
Version 6.0 (6A267n)

Notes:
Note that if this change is made, other parts of the template may need to be updated to use performBlock: and/or performBlockAndWait: when accessing the managed object context.

Configuration:
  Model Name:	MacBook Pro
  Model Identifier:	MacBookPro6,2
  Processor Name:	Intel Core i7
  Processor Speed:	2.66 GHz
  Number of Processors:	1
  Total Number of Cores:	2
  L2 Cache (per Core):	256 KB
  L3 Cache:	4 MB
  Memory:	8 GB
  Processor Interconnect Speed:	4.8 GT/s
  Boot ROM Version:	MBP61.0057.B0F
  SMC Version (system):	1.58f17
  Serial Number (system):	W80162SEAGZ
  Hardware UUID:	13AC6D87-DD19-50A0-8A68-E150C94A095F

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