AppVeyor: Remove submodule checkout depth

This avoid intermittent build failures due to a commit not being
reachable using a fixed depth, at the expense of longer checkout times.

Implement blended downscaling for display transfers

Services/SOC: Added command headers to some of the soc commands.

vfp: Change return type of VFPInit from unsigned int to void.

vfp: Handle accesses to FPINST/FPINST2 system registers.

Also has a side-benefit of correcting access to the FPEXC register.

Remove unused type unions breaking aliasing rules in horrible ways

VideoCore: Fix Floating Point Warning

AppVeyor: Remove os: unstable

The default os has Qt now, so there no need for the unstable os.

Add helpers to create IPC command buffer headers and descriptors

Color support for Y2R

Enforce the "no tab, use spaces" policy with a pre-commit hook.

Services: Continue separation of services into their own folders

Make the call stack entries not editable

Fix svcWaitSynch to correctly acquire wait objects

Log the GL driver’s vendor and renderer

hw: Fix mismatched Write call

Goodbye, SourceForge!

Create a second Windows archive with only the binaries

video_core: add extra braces around initializer

Trivial change and fixes several warnings in the clang build.