[461] Pasting to empty Edit via a scrap file doesn't mark as edited

Only suppress the '*' when an existing file is dropped into an empty window, not if via scrap (ie. an application supporting the clipboard, but not the ram fetch protocol). Fixes ticket #461.

rlib/c/txtedit

@@ -2091,9 +2091,9 @@ void txtedit_doinsertfile(txtedit_state *s, char *filename, BOOL replaceifwasnul
       } else {
         if (tsize == 0) {
           s->ty = ty;
-          txt_setcharoptions(s->t, txt_UPDATED + txt_DISPLAY, txt_DISPLAY);
           txtundo_purge_undo(s->t);
           if (replaceifwasnull) {
+            txt_setcharoptions(s->t, txt_UPDATED + txt_DISPLAY, txt_DISPLAY);
             strcpy(s->filename, filename);
             txtedit_settexttitle(s);
           };