Fix build warnings

Fix build warnings

Fix all build warnings in the CA branch. Build warnings due to
different pointer types for token, endpoint, and request info.

Change-Id: Ia29f8cb6f020457985ed1d6138e633eec412395e
Signed-off-by: Sakthivel Samidurai <sakthivel.samidurai@intel.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/259
Reviewed-by: Erich Keane <erich.keane@intel.com>
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Sudarshan Prasad <sudarshan.prasad@intel.com>