* make ROM match again
* clean up item_use.c labels and clarify functions.
* label and clarify some functions in decompress.c
* label and clarify berry.c
* rename 20239F8 to gBattleTypeFlags
* formatting
* Declare more non-static functions in header files
* Use `(void)` for functions without arguments.
* Move global-included data to seperate headers
* Don't import types or global in header
* Fix fieldmap imports
* Revert in-code changes
* Add missing newlines