(create-text-old): Properly quote \n in macro call.

(create-anonymous-text-old): Ditto.  (Bug 376).

doc/Protocol-A.texi

@@ -4236,7 +4236,7 @@ The only Misc-Info items valid for this call are @misc{recpt},
 
 @reqexample
 @example
-        1 28 @holl{20,Example\nMessage body} 3 @{ 0 5 1 112 2 33467 @}
+        1 28 @holl{20,Example\\nMessage body} 3 @{ 0 5 1 112 2 33467 @}
         @t{:16 0 33502 13 16 15 16 6 97 3 196 1 119 1 20 0}
         @t{    5 @{ 0 5 6 148 1 112 6 3438 2 33467 @} }
         @t{=1 33502}
@@ -5687,7 +5687,7 @@ in protocol version 10), @misc{comm-to} and @misc{footn-to}.
 
 @reqexample
 @example
-        1 28 @holl{20,Example\nMessage body} 3 @{ 0 5 1 112 2 33467 @}
+        1 28 @holl{20,Example\\nMessage body} 3 @{ 0 5 1 112 2 33467 @}
         @t{:16 0 33502 13 16 15 16 6 97 3 196 1 0 1 20 0}
         @t{    5 @{ 0 5 6 148 1 112 6 3438 2 33467 @} }
         @t{=1 33502}