Updated the included gettext library to 0.17 to fix a MinGW build issue.

GB: Corrected a lack of address masking in most of the cart RAM emulation code.
Fixes a few Chinese GameBoy Color games.

NES: (Re?)-added support for mapper 240(it was erroneously listed in the documentation as being supported...).

GBA: Fixed a buffer overflow in the ROM image loading code.

PC-FX: Several variables related to subchannel reading weren't being saved in save states. Fixed.
(This fixes save states made within the BIOS' CD-DA player)

PCE: Altered how the ADPCM read and write addresses are set.
Fixes the Super CD version of "Tengai Makyou Ziria", and "CD Mahjong Bishoujo Chuushinha".
Thanks to Exophase and ChrlyMac for the tips.
***(This change may potentially cause regressions. If it does, please report them at http://forum.fobby.net )***

PC-FX: Fixed a few deprecated const string to char* conversions in v810_cpuD.cpp.

PCE: Fixed a bug with Arcade Card emulation with a tip from Exophase.
The ADPCM sound effects in Garou Densetsu II work correctly now.

PCE: Reads from the timer count register the cycle it is set to reload after expiring will now return 0x7F. Fixes "Battle Royale".