x86

• copy/v86#431
• copy/v86#333 (add a mute button and/or fix the "requires a gesture" warning. A volume selector would also be nice)
• There's a minor issue where holding down and moving the mouse on the screen selects text outside of the screen on Firefox
• Retry XHR requests that fail with 5xx or time out, with exponential backoff
• Add configuration via url parameters (https://githu

如：xxx app + www.xxx.com

不要在此issue里面提各种问题，谢谢配合。

While the test_suite presented in #589 does work, it is still pretty simple and can be improved and enhanced.

• Add tests for gnutils and coreutils.
• Add necessary utilities so more complex programs can be compiled from sources.
• Integrate CMake, so one could write something like make validate and the subset of test that is deemed necessary (for example everything with min t