smbbrowse: Force NT1 protocol version for workgroup support
"Windows Network" doesn't work with recent samba versions, because "client max protocol" has been changed from NT1 to SMB3 recently. NT1 is mandatory for workgroup support. Let's force NT1 using the newly added smbc_setOptionProtocols API if available. But force this only when neither hostname, nor IP address is used. This among others prevents complete breakage if NT1 is disabled on server. Use GResolver to implement this heuristic.