FileSys: Clean up according to the coding style, and remove redundant namespaced names.
Merge pull request #303 from linkmauve/fs-cleanup

FileSys cleanup
dyncom: Fix SMLALXY's instruction labels

They were erroneously labeled as SMLAL.
Merge pull request #363 from lioncash/label

dyncom: Fix SMLALXY's instruction labels
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.