FvwmMFL: start by default

Make FVWM responsible for starting this module unconditionally.

If a user wishes to change where FvwmMFL puts its socket, the env var
FVWMMFL_SOCKET_PATH must now be set before FVWM starts up.  It won't be
enough to set this in ~/.fvwm/config, unless one issues a `KillModule
FvwmMFL` fist.

default-config/config

@@ -79,7 +79,6 @@ AddToFunc   StartFunction
 + I Test (Init) InitBackground
 + I Module FvwmButtons RightPanel
 + I Module FvwmEvent EventNewDesk
-+ I Module FvwmMFL
 
 # Function to set background when fvwm starts
 DestroyFunc InitBackground
@@ -705,4 +704,4 @@ DestroyModuleConfig EventNewDesk:*
 # exists, then read it. This allows changes to default-config settings
 # without needing a full copy of the default-config. This will also allow
 # default-config changes to get used after upgrades (if applicable).
-Test (f $[FVWM_USERDIR]/local.config) Read $[FVWM_USERDIR]/local.config
+Test (f $[FVWM_USERDIR]/local.config) Read $[FVWM_USERDIR]/local.config

fvwm/fvwm3.c

@@ -1280,6 +1280,7 @@ static void SetRCDefaults(void)
 		{ "ImagePath "FVWM_DATADIR"/default-config/images", "", "" },
 		{ "SetEnv FVWM_DATADIR "FVWM_DATADIR"", "", "" },
 		{ "SetEnv FVWM_IS_FVWM3 1", "", "" },
+		{ "Module FvwmMFL", "", "" },
 		/* The below is historical -- before we had a default
 		 * configuration which defines these and more.
 		 */
@@ -1320,9 +1321,9 @@ static void SetRCDefaults(void)
 		{ "Key Up M A MenuMoveCursor -1", "", "" },
 		{ "Key Down M A MenuMoveCursor 1", "", "" },
 		{ "Mouse 1 MI A MenuSelectItem", "", "" },
+		{ "Read "FVWM_DATADIR"/ConfigFvwmDefaults", "", "" },
 		/* don't add anything below */
 		{ RC_DEFAULTS_COMPLETE, "", "" },
-		{ "Read "FVWM_DATADIR"/ConfigFvwmDefaults", "", "" },
 		{ NULL, NULL, NULL }
 	};