Adding Automated login to FBSession and FBLoginDialog
 Changes to be committed:
	modified:   samples/SwitchUserSample/SwitchUserSample/SUSettingsViewController.m
	deleted:    src/Categories/FBLoginDialog+UnP.h
	deleted:    src/Categories/FBLoginDialog+UnP.m
	modified:   src/FBSession.h
	modified:   src/Legacy/FBLoginDialog.h
	modified:   src/Legacy/FBLoginDialog.m
	modified:   src/Login/FBSession.m
	modified:   src/facebook-ios-sdk.xcodeproj/project.pbxproj