Convert many RGL modules from Latin-1 to UTF-8 to speed up compilation

Also add flags coding=utf8 to silence warnings.

lib/src/german/MorphoGer.gf

@@ -1,9 +1,8 @@
 --# -path=.:../common:../../prelude
---# -coding=latin1
 --
 ----1 A Simple German Resource Morphology
 ----
----- Aarne Ranta & Harald Hammarström 2002 -- 2006
+---- Aarne Ranta & Harald Hammarström 2002 -- 2006
 ----
 ---- This resource morphology contains definitions needed in the resource
 ---- syntax. To build a lexicon, it is better to use $ParadigmsGer$, which
@@ -12,6 +11,7 @@
 resource MorphoGer = ResGer ** open Prelude, (Predef=Predef) in {
 
   flags optimize=all ;
+    coding=utf8 ;
 
 oper
 
@@ -36,7 +36,7 @@ oper
 
   genitS : Bool -> Str -> Str = \flag,hund -> case hund of {
     _ + ("el" | "en" | "er") => hund + "s" ;
-    _ + ("s" | "ß" | "sch" | "st" | "x" | "z") => hund + "es" ;
+    _ + ("s" | "ß" | "sch" | "st" | "x" | "z") => hund + "es" ;
     _ => hund + case flag of {True => "s"; False => "es"}
     } ;
   pluralN : Str -> Str = \hund -> case hund of {
@@ -52,14 +52,14 @@ oper
 -- Duden, p. 119
 
   verbT : Str -> Str = \v -> case v of {
-    _ + ("t" | "d") => v + "et" ; -- gründen, reden, betten
+    _ + ("t" | "d") => v + "et" ; -- gründen, reden, betten
     _ + ("ch" | "k" | "p" | "t" | "g" | "b" | "d" | "f" | "s") + 
-        ("m" | "n") => v + "et" ; -- atmen, widmen, öffnen, rechnen
-    _ => v + "t"                  -- lernen, lärmen, qualmen etc
+        ("m" | "n") => v + "et" ; -- atmen, widmen, öffnen, rechnen
+    _ => v + "t"                  -- lernen, lärmen, qualmen etc
     } ;
 
   verbST : Str -> Str = \v -> case v of {
-    _ + ("s" | "ss" | "ß" | "sch" | "x" | "z") => v + "t" ;
+    _ + ("s" | "ss" | "ß" | "sch" | "x" | "z") => v + "t" ;
     _ => v + "st"
     } ;