Adding default user switching functionality for hybrid
Implementing a user switching pattern in native and hybrid AppDelegates
Merge pull request #606 from khawkins/hybrid_switch_user

Hybrid user switching, app boundary user switching
Merge remote-tracking branch 'upstream/unstable' into unstable23_merge
Merge pull request #607 from khawkins/unstable23_merge

Mobile SDK: Merging unstable to unstable23