Fix for SVACE and Klocwork issues.

Fix for SVACE and Klocwork issues.

1. Fix for SVACE reported issues.
2. Fix for Klocwork reported issues.
3. Fix the resource creation issue when "rt" property is having null value.
4. Added to code to check the uniqueness property of array for primitive types int,
    double, boolean and string.

Change-Id: Ib869361f0ffa1dac5d3f7b36ebf76754661e2a7f
Signed-off-by: Harish Kumara Marappa <h.marappa@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/5369
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Madan Lanka <lanka.madan@samsung.com>