Add key translations 'C-x 8 a e' and 'C-x 8 A E'.

* lisp/international/iso-transl.el (iso-transl-char-map): Add
new entries for ae and AE.  (Bug#67225)

etc/NEWS

@@ -233,6 +233,12 @@ to enter the file you want to modify.
 It can be used to customize the look of the appointment notification
 displayed on the mode line when 'appt-display-mode-line' is non-nil.
 
+*** Additional key translations for æ and Æ
+
+These characters can now be input with "C-x 8 a e" and "C-x 8 A E",
+respectively, in addition to the existing translations "C-x 8 / e" and
+"C-x 8 / E".
+
 ** Emacs Server and Client
 
 ---

lisp/international/iso-transl.el

@@ -293,6 +293,8 @@
     ("a<"   . [?←])
     ("a>"   . [?→])
     ("a="   . [?↔])
+    ("ae"   . [?æ])
+    ("AE"   . [?Æ])
     ("_-"   . [?−])
     ("~="   . [?≈])
     ("/="   . [?≠])