IOT-2495 Fixed linking issue with BT connectivity
IOT-2495 Fixed linking issue with BT connectivity

The library connectivity_abstraction_internal does not work
for android if bluetooth is used. It must be linked with
connectivity_abstraction.
Windows still needs to link against
connectivity_abstraction_internal.

Bug: https://jira.iotivity.org/browse/IOT-2495

Change-Id: I357969543313199615ceac3b3b5e5b9f6b7f4b48
Signed-off-by: George Nash <acbdc39d528a4315fe0b532d55c50ae46f5c1667@intel.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/21411
Tested-by: jenkins-iotivity <d95b56ce41a2e1ac4cecdd398defd7414407cc08@iotivity.org>
Reviewed-by: Larry Sachs <87b901be7a441bcf97cbe259c532df419aac788e@intel.com>
Reviewed-by: Md. Adnan Sami <8518195754ea89aeeec26661061c14b7cb984d8d@samsung.com>
Reviewed-by: Rick Bell <74cf0087f675c7c2d5c6f65986a0832071d4b512@intel.com>

rzr/iotivity,rzr/iotivity,rzr/iotivity,rzr/iotivity,rzr/iotivity,iotivity/iotivity,rzr/iotivity,iotivity/iotivity,iotivity/iotivity,rzr/iotivity,iotivity/iotivity,iotivity/iotivity,iotivity/iotivity,iotivity/iotivity,iotivity/iotivity