Add runtime dir for non-persistent data

sbws/config.default.ini

@@ -58,8 +58,12 @@ max_download_size = 1073741824
 
 [tor]
 datadir = ${paths:sbws_home}/tor
-control_socket = ${tor:datadir}/control_socket
-log = ${tor:datadir}/log.txt
+# create runtime dir for data that does not need to be persistent
+run_dpath = $XDG_RUNTIME_DIR/sbws
+control_socket = ${tor:run_dpath}/control
+pid = ${tor:run_dpath}/tor.pid
+# note this is a directory
+log = ${tor:datadir}/log
 extra_lines =
 
 [cleanup]