Return bytes in packagequery.PackageQueryResult.evr() instead of a str

The packagequery.PackageQueryResult class is supposed to provide a
bytes API. Hence, packagequery.PackageQueryResult.evr() should return
bytes instead of a str. Also, adjust the single caller in the build
module.

osc/build.py

@@ -480,7 +480,7 @@ def create_deps(pkgqs):
         d = p.supplements()
         if d:
             depfile.append(b's:%s%s' % (id, b' '.join(d)))
-        depfile.append(b'I:%s%s-%s 0-%s' % (id, p.name(), p.evr().encode(), p.arch()))
+        depfile.append(b'I:%s%s-%s 0-%s' % (id, p.name(), p.evr(), p.arch()))
     return depfile
 
 

osc/util/packagequery.py

@@ -151,14 +151,14 @@ class PackageQueryResult:
         raise NotImplementedError
 
     def evr(self):
-        evr = decode_it(self.version())
+        evr = self.version()
 
         if self.release():
-            evr += "-" + decode_it(self.release())
+            evr += b"-" + self.release()
 
         epoch = self.epoch()
         if epoch is not None and epoch != 0:
-            evr = epoch + ":" + evr 
+            evr = epoch + b":" + evr 
         return evr