Bugfix 9373708

JBMR2 runtime restart (system process crash in the sync manager) during setup

The fix is to ensure that all access to SyncStatusInfo and related objects happens
while holding the mAuthority lock or is on a per-thread copy of the objects

Also, includes an unrelated fix for a bug I just noticed in the way
dumpSyncState() prints the periodic sync info

Change-Id: Id9e4dff41029412e133bdabc843d555434d9a12f
(cherry picked from commit 182ff3acbad9850b40d37ad1c23106be6eda8476)