Threads: Use a dummy idle thread when no other are ready. 

This thread will not actually execute instructions, it will only advance the timing/events and try to yield immediately to the next ready thread, if there aren't any ready threads then it will be rescheduled and start its job again.

GPU: Toggle active framebuffer each frame

Common: Clean up ThreadQueueList

dyncom: Fix SMULWB/SMULWT

Wasn't doing proper sign-extension

Replace all the C-style complicated buffer management with a std::deque.
In addition to making the code easier to understand it also adds support
for non-POD IdTypes.

Also clean the rest of the code to follow our code style.

Ported the CoreTiming namespace from PPSSPP

Implemented the required calls to make it work.

CoreTiming: Added a new logging class Core_Timing.

Fix double-free in Service manager during shutdown

Fixes #423.

dyncom: Fix SWPB

dyncom: Move over SMLALXY

Remove dead platform #ifdefs to make the code more readable.

Archives: Change the folder layout of some archives.

It now refers to me as the PoC

Symbian, Xbox, Blackberry and iOS got removed.
FreeBSD and Android kept due to them potentially being able to run Citra in the future.
The iOS specific part also got removed from PPSSPP in order to fix a bug there.

Renamed all .hxx headers to .h

Added exclusive reservation granule from ARMv7 spec to dyncom...

Remove x86 specifics

Services: Clean up a few things and add a few function names

Silence some -Wsign-compare warnings.

dyncom: Partially emulate BXJ

Just in case some game studio let the intern write inline assembly or something.

DSP: Signal (faked) interrupt on every frame.

dyncom: Actually set the Q flag for SMLABB/SMLABT/SMLATB/SMLATT

Easy skyeye todo fix.

dyncom: Implement QADD/QSUB/QDADD/QDSUB