MAP: Fix following for MapService shutdown:

- Mark MAPService state to stopped while
closeService is ongoing. This will avoid
extra shutdown message in stop() and
fix a relevant NPE.
- Donot block for AcceptThread(s) cleanup
during shutdown. Fix the handler thread blocking
to handle BT TURN OFF timeout exception.
- Avoid setState for MAPProfile everytime and
set state changed only if not already done.

Change-Id: I065a13193200d3aa358abe5d82f1343244b05b97