Add debian/ directory (temporarily). This was created initially from pkg-libvirt/libguestfs.git commit 680ff0b0e8c9133ef987e68392bd3990715f6891. This is a temporary measure to allow us to build Debian and Ubuntu packages more easily. When downstream packaging is being done on these distros we will remove this directory again. To build a Debian package, use this command: debuild -i -us -uc -b