dyncom: Minor cleanup.

Core/ResourceLimits: Implemented the basic structure of ResourceLimits.

Windows build fixes

Implemented svcs GetResourceLimit, GetResourceLimitCurrentValues and GetResourceLimitLimitValues.

Note that the resource limits do not currently keep track of used objects, since we have no way to distinguish between an object created by the application, and an object created by some HLE module once we're inside Kernel::T::Create.

Memory: Use a table based lookup scheme to read from memory regions

memory.cpp/h contains definitions related to acessing memory and
configuring the address space
mem_map.cpp/h contains higher-level definitions related to configuring
the address space accoording to the kernel and allocating memory.

thread: Fix a conditional check in Reschedule

Continue the axing of common

These are already defined in arm_dyncom_interpreter_dec.cpp.

These can simply be const vars.

Qt: Shutdown emulation session only if EmuThread exists.

dyncom: Fix decoding of BKPT's immediate

Install a .desktop file to make citra-qt launchable from DE menus

A shift here is intended since the representation is imm12:imm4

PTM: Changed the ptm services  to be like the IR, HID, and APT services.

GPU: add more fine grained profiling for vertex shader and rasterization

Core/Memory: Add TLS support for creating up to 300 threads

Thread: Remove the idle thread

Core/Scheduling: Prepare the new priority in the thread queue when svcSetPriority is called

vfp: Handle flush-to-zero mode.

dyncom: Stub MCRR and MRRC

Instead just use nullptr to represent no thread is active.

Core/HLE: Implemented the SVCs GetProcessId and GetProcessIdOfThread

IR, HID, and APT services.