Sprite Cache and Managed Objects produce a lot of entries in the log currently.
They use a macro to set if they should be on or not, but this macro may be set =0, with the intent of disabling.
Let's instead use #if when testing these macros.
Additionally
- only define DEBUG_MANAGED_OBJECTS if AGS_DEBUG_MANAGED_OBJECTS is true
- adds a new command line flag AGS_DEBUG_SPRITECACHE, which will only define DEBUG_SPRITECACHE if true
- guard indefinition through core/platform.h
From upstream e8bd58da2e09d844068dc087f1da153a693b7aa8