bios: Create from Normmatt's open-source GBA BIOS replacement, derived from the source code of VBA-M.

All ports: Bundle Normmatt's open-source GBA BIOS replacement. DSTwo: The BIOS is now directly in the TEMPGBA plugin directory. GCW Zero: The BIOS is now included in the OPK package and used if the .gpsp folder does not have a gba_bios.bin of its own.
Revert "memory.c, others: Add #define GAMEPAK_FITS_IN_RAM, which is for platforms on which the entire largest Game Pak can be loaded without needing to load on demand."

This reverts commit 03712e7f6ff5c94085bdd8b9081fceb1ec0f847a.

Conflicts:
	source/gcw0/Makefile
	source/memory.h