Fixed #68: Batch saving is broken since 2.5.x
Forgot to remove debugging code.
Fixed #71: NSFNanoEngine: weak attribute only applies to objects
Fixed #72: Three analyze warnings: Dereference of null pointer
Removed '_createAndOpenDebugDatabase' from 'testBagSearch'.
Fixed #73: One more warning: Dereference of null pointer
Allow UnitTestiOS target to build, profile, archive and analyze.