setup.py: s/PY_VERSION/VERSION/

When generating spec file, @PY_VERSION@ is replaced with the
current version of libvirt-python. Well, it's not as obvious as
it could be: usually it's just @VERSION@. Worse, the PY_ prefix
may mislead readers into thinking it refers to python version.

Just drop the PY_ prefix.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>

libvirt-python.spec.in

@@ -14,7 +14,7 @@
 
 Summary: The libvirt virtualization API python3 binding
 Name: libvirt-python
-Version: @PY_VERSION@
+Version: @VERSION@
 Release: 1%{?dist}
 Source0: https://libvirt.org/sources/python/%{name}-%{version}.tar.gz
 Url: https://libvirt.org

setup.py

@@ -196,7 +196,7 @@ class my_sdist(sdist):
     def gen_rpm_spec(self):
         return self._gen_from_in("libvirt-python.spec.in",
                                  "libvirt-python.spec",
-                                 "@PY_VERSION@",
+                                 "@VERSION@",
                                  getVersion())
 
     def gen_authors(self):