devices: software-only sources should be appended at the very end

hopefully this will result in hardware sources to be shown first
if any sort of a graphical interface is being used to show a list...

lib/osmosdr_device.cc

@@ -121,18 +121,10 @@ devices_t device::find(const device_t &hint)
   BOOST_FOREACH( std::string dev, fcd_source::get_devices() )
     devices.push_back( device_t(dev) );
 #endif
-#ifdef ENABLE_FILE
-  BOOST_FOREACH( std::string dev, file_source_c::get_devices() )
-    devices.push_back( device_t(dev) );
-#endif
 #ifdef ENABLE_RTL
   BOOST_FOREACH( std::string dev, rtl_source_c::get_devices() )
     devices.push_back( device_t(dev) );
 #endif
-#ifdef ENABLE_RTL_TCP
-  BOOST_FOREACH( std::string dev, rtl_tcp_source_c::get_devices() )
-    devices.push_back( device_t(dev) );
-#endif
 #ifdef ENABLE_UHD
   BOOST_FOREACH( std::string dev, uhd_source_c::get_devices() )
     devices.push_back( device_t(dev) );
@@ -146,5 +138,18 @@ devices_t device::find(const device_t &hint)
   devices.push_back( device_t(dev) );
 #endif
 
+  /* software-only sources should be appended at the very end,
+   * hopefully resulting in hardware sources to be shown first
+   * in a graphical interface etc... */
+
+#ifdef ENABLE_RTL_TCP
+  BOOST_FOREACH( std::string dev, rtl_tcp_source_c::get_devices() )
+    devices.push_back( device_t(dev) );
+#endif
+#ifdef ENABLE_FILE
+  BOOST_FOREACH( std::string dev, file_source_c::get_devices() )
+    devices.push_back( device_t(dev) );
+#endif
+
   return devices;
 }