change from dpkg-deb to dpkg-buildpackage

change from dpkg-deb to dpkg-buildpackage

Add debian directory and move the respective files there and add
missing (rules, compat, docs).

Add a Source section to the control.in file and "build" (sed
control.in >control) in the $DEB target as done in most other
packages

Move the qm verifyapi check to the new "test" target, which gets
executed before the dh_auto_install target.

Remove the obsolete vzsyscalls.ph target, vzsyscalls.h is gone for a
while now

Cleanup "clean" target.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>