This has been confirmed on hardware. Fixes Etrian Odyssey IV.

This was discovered and verified by @fincs. The tev combiner buffer
actually lags behind by one stage, meaning stage 1 reads the initial
color, stage 2 reads stage 0's output, and so on.

Fixes character portraits in Fire Emblem: Awakening and world textures
in Zelda: ALBW. Closes #1140.

The LOG_* function itself already appends one.

This brings goodies such as a configurable user interface and
multi-threaded timeline view.

IncrementWrap and DecrementWrap, verified with hwtests.

Verified with hwtests.

The HW renderer already did this.

Verified the behavior with hardware tests.

- Also renames "vertex_shader.*" to "shader_interpreter.*"

Some disabled debugging functionality was being called from rendering
routines in VideoCore. Although disabled, many of them still allocated
memory or did some extra work that was enough to show up in a profiler.
Gives a slight (~2ms) speedup.

- This is a workaround until we support fragment lighting.

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.

Also adds better documentation and removes the one-off reimplementation
of the function in pica.h.