equip conversion subprocesses with info to signal parent on completion, + plug into a wakeup thread, which can re-trigger the async wavefront. also fix duplicate line counts in text parsing

src/base/base_entry_point.c

@@ -72,7 +72,7 @@ main_thread_base_entry_point(int arguments_count, char **arguments)
   di_init();
 #endif
 #if defined(DBG_INFO2_H) && !defined(DI_INIT_MANUAL)
-  di2_init();
+  di2_init(&cmdline);
 #endif
 #if defined(DEMON_CORE_H) && !defined(DMN_INIT_MANUAL)
   dmn_init();