Add Debian version build tags with dch
This MR patches the debian/source and debian/build components to use Debian-version-specific build tags when adding changelog entries with dch.
The impact of this change is as follows (for a project with X.Y.Z-1 in debian/changelog on Debian version N):
| Proj. Type | Old dch version |
New dch version |
|---|---|---|
| Python | A.B.C-9999 |
A.B.C-9999+debNu1 |
| Other | X.Y.Z-2 |
X.Y.Z-1+debNu1 |