Add another global to disable the reaper.

src/conio/ciolib.h

@@ -307,6 +307,7 @@ CIOLIBEXPORTVAR int directvideo;
 CIOLIBEXPORTVAR int hold_update;
 CIOLIBEXPORTVAR int puttext_can_move;
 CIOLIBEXPORTVAR int ciolib_xlat;
+CIOLIBEXPORTVAR int ciolib_reaper=TRUE;
 
 #define _conio_kbhit()		kbhit()
 

src/conio/sdl_con.c

@@ -1548,6 +1548,7 @@ int sdl_video_event_thread(void *data)
 						break;
 					case SDL_QUIT:
 						sdl_add_key(CIO_KEY_QUIT);
+						if (ciolib_reaper)
 							sdl.CreateThread(cheery_reaper, NULL);
 						break;
 					case SDL_VIDEORESIZE: