Link against libdl on Linux / OS X

(dl is the library containing the dynamic loader functions on Unix.)

Source/BansheeUtility/CMakeLists.txt

@@ -29,8 +29,8 @@ target_link_libraries(BansheeUtility
 	Rpcrt4
 	)
 else()
-	# TODO_OTHER_PLATFORMS_GO_HERE
+	target_link_libraries(BansheeUtility dl)
 endif()
 
 # IDE specific
-set_property(TARGET BansheeUtility PROPERTY FOLDER Layers)
+set_property(TARGET BansheeUtility PROPERTY FOLDER Layers)