fix a bug where loading of file coming via dlc will never work and not call the callback.
fix a bug  on android where localhost is not present in URL, and exception is triggered.
cosmetics.
now multithreaded with synchronous curl, called in threaded component...
fixing android multithread downloading behavior.
cosmetics and debug...
Merge branch 'develop' of github.com:asmodehn/WkCocos into game/DLC_system_integration
fixing loading scene to match new loading manager constructor.