Remove using the new and old target_link_libraries signature on a target.

Starting with CMake 2.8.12 we warn about using the old and new
target_link_libraries signature on a given target. The problem is that
using the new signature changes the behavior of the old signature.

Change-Id: Ie4fedce71fd39017fc5cd9e9ffadd516e0429ac5
Merge topic 'cmake_policy_23_warnings' into next

726a8b1 Remove using the new and old target_link_libraries signature on a target.