Added use_item_on_dude macro to sfall.h

Various code edits:
* Implemented more HookCalls/MakeCalls/SafeWriteBatch in code.
* Moved return/jump address consts into their respective functions.
* Changed for-loop with iterators to use pre-increment.

sfall/Modules/LoadOrder.cpp

@@ -154,7 +154,7 @@ end:
 }
 
 static void InitExtraPatches() {
-	for (auto it = patchFiles.begin(); it != patchFiles.end(); it++) {
+	for (auto it = patchFiles.begin(); it != patchFiles.end(); ++it) {
 		if (!it->empty()) fo::func::db_init(it->c_str(), 0);
 	}
 	// free memory