src: rename msg_entr* to osmo_config_*

Summary of changes:

s/msg_entry_parse/osmo_config_list_parse/g
s/msg_entry/osmo_config_entry/g
s/msg_entries/osmo_config_list/g
diff --git a/openbsc/src/osmo-bsc_nat/bsc_nat_vty.c b/openbsc/src/osmo-bsc_nat/bsc_nat_vty.c
index a115fad..f56ebb8 100644
--- a/openbsc/src/osmo-bsc_nat/bsc_nat_vty.c
+++ b/openbsc/src/osmo-bsc_nat/bsc_nat_vty.c
@@ -462,7 +462,7 @@
 	if (_nat->num_rewr_name) {
 		if (_nat->num_rewr)
 			talloc_free(_nat->num_rewr);
-		_nat->num_rewr = msg_entry_parse(_nat, _nat->num_rewr_name);
+		_nat->num_rewr = osmo_config_list_parse(_nat, _nat->num_rewr_name);
 		return _nat->num_rewr == NULL ? CMD_WARNING : CMD_SUCCESS;
 	} else {
 		if (_nat->num_rewr)