Merge pull request #526 from khawkins/unstable

Updating project versions to Xcode 5.1
Adding some tests for user account, switching, etc.
Merge pull request #527 from khawkins/account_manager_tests

Adding some tests for user account, switching, etc.
Better count query - but no speed up observed with SFSmartStoreLoadTestSuite though
Running new test (without count code change times out - with count code change runs in <10s)
Merge pull request #528 from wmathurin/countsql

Faster count query generated to estimate result set size
Clear 64-bit warnings