Introduces a new user interface that looks much nicer, is easier to
navigate with controllers, provides more context to users, and is
scalable. Some additional features are included.
* Adds 'popup menu' with actions that can be used easily from controller
* Adds 'main menu', unifying other configuration dialogs
* Adds port-forwarding user interface
* Adds screenshot feature
* Adds volume control feature
* Adds gamepad auto-bind option
* Adds vsync configuration option
* Adds auto UI scaling
* Adds preferred window size selection
* Adds AV pack selection
* Exposes some existing config items in GUI
This is a start to hard float support for x87. It can fail in several
ways and has lots of room for improvement, but based on practical
testing it appears reliable and significantly increases performance in
FP-bottlenecked game code. Improvement to rounding, exception handling,
and performance accompanied by rigorous testing will be necessary next
steps for this work.