add back missing files
update deployment target to iOS 6 for ARC support
missed an old reference
retain captureQueue

resolves a compiler warning
add missing file
undo previous change

warning is wrong
fix project for scanner example
Update examples with latest PDF417 classes
Add conditional dispatch_release for captureQueue
Convert examples to workspaces

This should help prevent added/removed files from not being updated in
the example projects, as well as an additional test for the ZXingObjC
targets (the iOS library one at least).
Fix static analyzer warnings

Fixes #89
Fix imports in example apps
Remove iOS Framework target
Ported r2708 from ZXing

Original commit message: "More PDF417 changes from Guenther"
Add support for 64-bit
Correct ZXCapture setTorch:.

Fixes #95
Fix CGImageRef leak in ZXImage.

Fixes #96
Fix example apps
Start and stop capture sessions in background
Improve performance of BarcodeScanner

Initialize the scanner in viewDidLoad, and set/clear the delegate in the
appearance methods.