Corrected direct use of u_arraylist_t internals.

Corrected direct use of u_arraylist_t internals.

Places in the code were using u_arraylist_t internals, including
sections that were copies of the standard functions. These were
corrected to avoid further divergence and allow for corrections.

Change-Id: I52d251e19d8f80945d71e9d57b5c8107aaa3a4ca
Signed-off-by: Jon A. Cruz <jonc@osg.samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/2205
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Erich Keane <erich.keane@intel.com>