Display info if package does not exist on server

osc mpcdf_build_status should not fail if the package simply does not exist for the specific repo.

mpcdf_build_status.py

@@ -48,7 +48,14 @@ def do_mpcdf_build_status(self, subcmd, opts, *args):
         if project.startswith("software:") or project == "home:{0}".format(user):
             print(project)
             project_url = osc.core.makeurl(api_url, ["build", project, "_result?view=status&multibuild=1&package={0}".format(package)])
-            resultlist = ElementTree.fromstringlist(osc.core.streamfile(project_url, osc.core.http_GET))
+            try:
+                resultlist = ElementTree.fromstringlist(osc.core.streamfile(project_url, osc.core.http_GET))
+            except osc.core.HTTPError as e:
+                if e.code == 404:
+                    print("   {0} not found".format(package))
+                    continue
+                else:
+                    raise e
 
             actualPackages = set()
             for result in resultlist.findall("./result"):