deb-src-control(5): Use linux-any in example control stanza

Instead of using the negated list of not supported architectures, just
use the positive form, which should be considered current best practice.

man/deb-src-control.5

@@ -300,7 +300,7 @@ Vcs\-Browser: http://git.debian.org/?p=dpkg/dpkg.git
 Vcs\-Git: git://git.debian.org/git/dpkg/dpkg.git
 Standards\-Version: 3.7.3
 Build\-Depends: pkg\-config, debhelper (>= 4.1.81),
- libselinux1\-dev (>= 1.28\-4) [!hurd\-i386 !kfreebsd\-i386 !kfreebsd\-amd64]
+ libselinux1\-dev (>= 1.28\-4) [!linux\-any]
 
 Package: dpkg\-dev
 Section: utils