Fix MinGW build, again

dyncom: Fix ADC overflow flag setting

SVC: Wake up the thread after the delay in WaitSync1

dyncom: Fix conditional execution of MSR

Replace OnCpuStepped signal

Add appveyor.yml for AppVeyor support

Thread: Prevent waking a thread multiple times.

If a thread was woken up by something, cancel the wakeup timeout.

citra-qt: Fixed some Qt errors on initialization

Stubbed y2r:u IsBusyConversion

There is no documentation available on this function, but we set the result to false as a stub.
This allows Super Little Acorns to move all the way in game with pp3c.

Small additions and fixes to logging

Revert "Travis: Enable caching of dependencies"

Logging: Log all called service functions (under trace). Compile out all trace logs under release for performance.

CMake: Consistently set _DEBUG and NDEBUG in all platforms

Kernel Lifetime Reform Pt. 3

Build improvements

Cleanup: Remove redundant /Oi flag

Kernel Lifetime Reform Pt. 2

Warn if a new thread is intended to be run on the system CPU core

`/Oi` is included in `/Ox` already

CMake: Enable VS parallel builds for a good reduction in compile times