Make target-lock a feature flag

src/game/boe.main.cpp

@@ -98,7 +98,8 @@ std::string help_text_rsrc = "help";
 std::map<std::string,std::vector<std::string>> feature_flags = {
 	// Legacy behavior of the T debug action (used by some replays)
 	// does not change the party's outdoors location
-	{"debug-enter-town", {"move-outdoors"}}
+	{"debug-enter-town", {"move-outdoors"}},
+	{"target-lock", {"V1"}}
 };
 
 struct cParseEntrance {

src/game/boe.newgraph.cpp

@@ -1040,7 +1040,7 @@ short scan_for_response(const char *str) {
 void handle_target_mode(eGameMode target_mode, int range) {
 	overall_mode = target_mode;
 	// Lock on to enemies in range: 
-	if(get_bool_pref("TargetLock", true)){
+	if(has_feature_flag("target-lock", "V1") && get_bool_pref("TargetLock", true)){
 		location loc = univ.current_pc().combat_pos;
 
 		std::vector<location> enemy_locs_in_range;