Allow the user to set the background clear color during emulation

Services: Stubs and minor changes

The background color can be seen at the sides of the bottom screen or when the window is wider than normal.

dyncom: Isolate CP15 register reading and writing

Also implements writing to the rest of the ARM11 MPCore CP15 register set.

Keeps everything contained. Added all supported readable registers in an ARM11 MPCore.

callstack: Remove unnecessary disassembler instantiation

disassembler: Get rid of a const_cast

Decode is a static function. There's no need to allocate a disassembler instance.

It's a generic helper function, so it should be here anyway.

ConfigMem: Set the app memory to be 96MB instead of the default 64MB

dyncom: Implement RFE and SRS.

dyncom: Remove unused/unnecessary macros and macro constants

Services/FS: Implemented DeleteExtSaveData, CreateSystemSaveData and Del...

armmmu: Remove unnecessary enum values

We don't need to care about XScale or Intel specific ARM stuff.

Implement SETEND.

Remove mysterious spaces that were added by `git show --format`

No idea why these spaces are only added on recent revisions of Citra
(older revisions did not have this problem).

Let's just remove the spaces then in Powershell.

In CreateExtSaveData, DeleteExtSaveData and CreateSystemSaveData

AppVeyor: Strip newlines on the build name before trying to upload.

CI: upload builds to builds.citra-emu.org instead of MEGA

GPU: Fixed the bit 25 in the display transfer flags.

 HID: Proper Signal Interrupts for EnableAccelerometer & EnableGyroscopeLow along  with a stub for GetSoundVolume

with a stub for GetSoundVolume

NCCH: Minor updates to the ncch header

Fix two minor understandability issues in common

Rephrased some comments.

Pica/VertexShader: Fix a bug caused due to incorrect assumptions of consecutive output register tables.

Add static_cast around expressions where the compiler doesn’t deduce the right type