in GetTouchState()

Implementing this function currently is not critical, as we don't perform any configuration changes, yet.

However, the interface is a good starting point for adding this functionality.

The window title is none of the emulation core's business. The GUI code is free to put whatever it wants there.
Providing properly thread-safe window title getters and setters is a mess anyway.

The view is scaled to be as large as possible, without changing the aspect, within the bounds of the window.
On "retina" displays, or other displays where window units != pixels, the view should no longer draw incorrectly.

Gets rid of a warning on OSX.

Uses QSettings on citra-qt, and inih on citra-cli.

- cleaned up window title
- cleaned up emu_window_glfw/emu_window