consolidate version_information

tools/monitor.cpp

@@ -60,9 +60,7 @@ int main(int argc, char *argv[])
                     usage(argv[0]);
                     return 0;
                 case 'V':
-                    std::cout<<version_str()<<"\n";
-                    std::cout<<EPICS_VERSION_STRING<<"\n";
-                    std::cout<<"libevent "<<event_get_version()<<"\n";
+                    std::cout<<pvxs::version_information;
                     return 0;
                 case 'v':
                     verbose = true;