Compile-time option to allow some prompts remember the input

Define EDIT_GETLIN to make the tty, X11, and Qt4 windowports to
remember the input strings for wishing and annotation.

src/pager.c

@@ -1033,7 +1033,7 @@ coord *click_cc;
 {
     boolean quick = (mode == 1); /* use cursor; don't search for "more info" */
     boolean clicklook = (mode == 2); /* right mouse-click method */
-    char out_str[BUFSZ];
+    char out_str[BUFSZ] = DUMMY;
     const char *firstmatch = 0;
     struct permonst *pm = 0;
     int i = '\0', ans = 0;