Adding functionality to logout all users
Reworking clearPasscodeState to behave as a synchronous, non-UI method
Rev'ing the SDK patch version
Merge pull request #640 from khawkins/logout_all_users

Logout all users
Merge remote-tracking branch 'upstream/master' into unstable_merge

Conflicts:
	shared/SalesforceSDKCore/SalesforceSDKCore/Classes/Common/SalesforceSDKConstants.h
Merge pull request #641 from khawkins/unstable_merge

Mobile SDK: Merging master to unstable