codec: Fix ADPCM distortion caused by incorrect nibble order

Closes #2049.

Signed-off-by: MerryMage <MerryMage@users.noreply.github.com>

travis: Update to XCode 7.3.1

Qt: unify running detection of system settings configure

Revert "MSVC: Add RelWithDebInfo and removing debugging from Release."

MSVC: Add RelWithDebInfo and removing debugging from Release.

Create a separate archive for debug symbols on windows

This reduces the main download size and uploads the symbols to a different
directory

appveyor: Remove tests.exe and tests.pdb from archive

This should reduce build size on windows from roughly 12MB compressed to 7MB

Qt graphics configure & V-Sync option

User-configurable option to enable/disable time-stretching of audio

OpenGL: Avoid error on unsupported lighting LUT

Auto-detect original shared_font.bin memory base

AppVeyor: Cache chocolatey packages

Implemented CRO

fix #1942 and add a few IPC functions for descriptors

This allows a file dumped from either an o3DS or a n3DS (and potentially
even an original unrebased file) to be used.

.github: Add ISSUE_TEMPLATE.md

dyncom: Read-after-write in SMLA

In the case when RD === RN, RD was updated before AddOverflow was called
to check for an overflow, resulting in an incorrect state of the Q flag.