Added unit tests for the new object detection tools

dlib/test/CMakeLists.txt

@@ -69,6 +69,7 @@ set (tests
    member_function_pointer.cpp
    metaprogramming.cpp
    multithreaded_object.cpp
+   object_detector.cpp
    one_vs_all_trainer.cpp
    one_vs_one_trainer.cpp
    optimization.cpp

dlib/test/makefile

@@ -84,6 +84,7 @@ SRC += md5.cpp
 SRC += member_function_pointer.cpp
 SRC += metaprogramming.cpp
 SRC += multithreaded_object.cpp
+SRC += object_detector.cpp
 SRC += one_vs_all_trainer.cpp
 SRC += one_vs_one_trainer.cpp
 SRC += optimization.cpp