Recreating project, updated format
Finalizing SDK project changes
Adding 'dummy' app for unit tests to run as Application Tests
Merge pull request #220 from khawkins/update_native_lib_project

Updating SalesforceSDK project, unit tests
Merge remote-tracking branch 'upstream/unstable' into unstable20

Conflicts:
	native/SalesforceSDK/SalesforceSDK.xcodeproj/project.pbxproj
Merge pull request #221 from khawkins/unstable20

Merging unstable into unstable20
Adding initial crypto helpers, tests
Interim checkin.  Adding SFPBKDFData objects
Adding NSCoding implementation to PBKDF data object
Passcode provider implementation
Changing protocol method name
Implement PBKDF2 passcode provider
Adding passcode provider tests
Starting SFPasscodeManager tests
More passcode tests
Updating SmartStore tests to test both passcode providers.
Adding new SalesforceCommonUtils headers to projects
Changes to support automatic update to preferred passcode provider
Merge pull request #223 from khawkins/encryption_updates

Refactor to passcode provider, add PBKDF2 provider
Added missing comments for new members of SFPasscodeProvider