Constant time insert into linked list of resources.
Do not iterate over linked list to insert at end.
We already iterate once to check if resource uri already exists.
Use a pointer to the tail of the linked list to insert resource.
Changed two extern variables to static as they're only used in one module.
Change-Id: I41f458a2384b4fa2d8a23d78e632e1614d4875c8
Signed-off-by: Mandeep Shetty <mandeep.shetty@intel.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/365
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Doug Hudson <douglas.hudson@intel.com>
Reviewed-by: Erich Keane <erich.keane@intel.com>