armemu: Implement QADD8/QSUB8
dyncom: Implement QADD8/QSUB8
Merge pull request #361 from lioncash/moreqops

dyncom/armemu: Implement QADD8/QSUB8.
Archives: Implemented ExtSaveData and SharedExtSaveData

They will be stored in /extsavedata/SDMC and /extsavedata/NAND respectively.
Also redirect some APT_A functions to their APT_U equivalents.
Implemented the gamecoin.dat file in SharedExtSaveData in the PTM module.
Implemented formatting the savegame.
Retake a previous savegame if it exists instead of reporting them as not formatted every time a game is loaded.
Build: Attempt to fix linux build
ExtSaveData: Addressed some comments