AI 143281: am: CL 142990 Fixes #1739360. SimpleCursorAdapter was calling...

AI 143281: am: CL 142990 Fixes #1739360. SimpleCursorAdapter was calling (unnecessarily) toString() on the Cursor even in the case where a ViewBinder was being used. This could cause crashes when the cursor was currently on a blob. This change defers the String conversion to the case where no ViewBinder is used.
  Original author: romainguy
  Merged from: //branches/donutburger/...

Automated import of CL 143281