Fix filename&path encode problem on Windows

CMakeFiles: Compile as C++14

OpenGL: Check for framebuffer completeness

Dummy implementation dlp:SRVR Service.

cecd:u: stub GetCecInfoEventHandle, GetChangeStateEventHandle

GSP: Return proper error codes for register writes

Avoid warnings by casting to size_t for ARRAY_SIZE() comparisons

Prevent cache overflow when single stepping

Add gsp functions: SetAxiConfigQoSMode, UnregisterInterruptRelayQueue

DSP: Implement audio filters (simple, biquad)

Add common methods to all cfg:* ports

Compilation fix

Fix Qt string encode problem on Windows

Remove unnecessary const & replace pointer with reference

hid: implement accelerometer and gyroscope back-end

DSP: Implement audio codecs (PCM8, PCM16, ADPCM)

Immediate-mode improvements

This partially fixes Etrian Odyssey IV.

Our code did not handle this well, causing random crashes in some
situations.

fix SDL2 detection for Visual