It's unused and doesn't look like it compiles anyway :/

Instead of forcibly taking the last 4 characters, it now finds the last extension separator (the period) and takes a substr of its location.

In C++ you can simply just declare it as is.

Several cleanups to the buildsystem:
 - Do better factoring of common libs between platforms.
 - Add support to building on Windows.
 - Remove Qt4 support.
 - Re-sort file lists and add missing headers.

This should fix the GL loading errors that occur in some drivers due to
the use of deprecated functions by GLEW. Side benefits are more accurate
auto-completion (deprecated function and symbols don't exist) and faster
pointer loading (less entrypoints to load). In addition it removes an
external library depency, simplifying the build system a bit and
eliminating one set of binary libraries for Windows.

GPU: Improve frame synchronization, increases compatibility with both homebrew and retail applications.

Core: Cleaned up comment to be more readable.

Citra: Changed loop to be more readable.

- Useful for debugging homebrew

Qt: Updated GUI to support loading .bin files.

- Useful for debugging homebrew

Qt: Updated GUI to support loading .bin files.

Screen contents are now displayed using textured quads. This can be updated to expose an FBO once an OpenGL backend for when Pica rendering is being worked on. That FBO's texture can then be applied to the quads.

Previously, FBO blitting was used in order to display screen contents, which did not work on OS X. The new textured quad approach is less of a compatibility risk.