[git commit master] mass renaming Kbuild -> Kbuild.src, Config.in -> Config.src

[Denys Vlasenko]

commit: http://git.busybox.net/busybox/commit/?id=da929a95aace0e79fbc621af2ab03c76d74d5fcb
branch: http://git.busybox.net/busybox/commit/?id=refs/heads/master

Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>

Patch is too large, so refusing to show it