SOC_U: Implemented some socket functions

Stubbed CreateMemoryBlock

Using Berkeley sockets, and Winsock2.2 on Windows.
So far ftpony creates the socket and accepts incoming connections

SOC_U: Renamed functions to maintain consistency

Also prevents possible scope errors / conflicts with the actual Berkeley socket functions

SOCU: Close all the opened sockets when cleaning up SOCU

dyncom: Implement UADD8/UADD16/USUB8/USUB16/UASX/USAX

Add citra icon to executable and window title in Windows

dyncom: Massive refactor

Fix MinGW build (2)

vfp: Get rid of a few warnings

vfp: Implement VMOVBRRSS

dyncom: Implement USAT16/SSAT16

MemMap: Add support for DSP Read & Writes in the memory map

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.

dyncom: Implement USAT/SSAT

MemMap: Removed I/O address's and added more stuff

dyncom: Various cleanups to match coding style, no functional changes.

Allow focus on the Qt render widget

Rasterizer Optimizations

dyncom/armemu: Implement QADD8/QSUB8.

dyncom: Fix SMLALXY's instruction labels

They were erroneously labeled as SMLAL.

FileSys cleanup

dyncom: Implement UXTB16/UXTAB16

Execute the division-by-W for perspective-correct interpolation of
values in the clipper, moving them out of the rasterization inner loop.

Replace the loop-based texture address swizzling code by a bit-twiddling
implementation, providing a very small speed up. Also simplify
addressing code.

Move the computation of some values out of loops so that they're not
constantly recalculated even when they don't change.