Linux Kernel's Kconfig xconfig Ported To Qt5

It's usually not worth mentioning Kconfig changes for each new Linux kernel release, but this time around there is actually new functionality to point out.

With the Kconfig pull request for the Linux 4.4 kernel, running make xconfig to visually configure the kernel's configuration options will now support using the Qt5 tool-kit.

The xconfig UI for the Linux kernel make configuration has been ported to make use of Qt5 while dropping support for Qt3. More details can be found via the pull request.

Of course, aside from this Qt5 porting, there's many new features to find in Linux 4.4.