[Pkg-uml-pkgs] Bug#837920: user-mode-linux should be built directly by src:linux

[Adrian Bunk]

Package: user-mode-linux
Version: 4.7-1um-1
Severity: normal

A separate source package for user-mode-linux made sense 15 years ago,
when a huge patch of non-upstreamed kernel code existed for user-mode-linux.

What is left today in the user-mode-linux source package are 6 small
patches to UML-specific code (2 or 3 of them look Debian-specific)
and the kernel configurations for i386 and amd64.

There doesn't seem to be any good reason left for a separate source
package, and this would also bring DSA fixes for stretch kernels
automatically to the user-mode-linux kernel.