added prefix to unittest macro

cmake_support/OST.cmake

modules/base/tests/CMakeLists.txt

modules/bindings/tests/CMakeLists.txt

modules/conop/tests/CMakeLists.txt

modules/geom/tests/CMakeLists.txt

modules/gfx/tests/CMakeLists.txt

modules/img/alg/tests/CMakeLists.txt

modules/img/base/tests/CMakeLists.txt

modules/io/tests/CMakeLists.txt