Changed the return type of functions in uarraylist

Changed the return type of functions in uarraylist

uarraylist.h includes the common functions for array list.
but now it depend on cacommon.h file.
so I modified the return value to reduce the dependence
on the other files.

Change-Id: Ia8584f000f78fec80b21006594af6574dbb6840b
Signed-off-by: hyuna0213.jo <hyuna0213.jo@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/2218
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Jaehong Jo <jaehong.jo@samsung.com>
Reviewed-by: jihwan seo <jihwan.seo@samsung.com>
Reviewed-by: Jon A. Cruz <jonc@osg.samsung.com>