Add explicit character encoding specifications in 39 more RGL modules

To silence warnings and avoid potential problems after changing the default
encoding to UTF-8.

lib/src/estonian/ConjunctionEst.gf

@@ -1,7 +1,7 @@
 concrete ConjunctionEst of Conjunction = 
   CatEst ** open ResEst, Coordination, Prelude in {
 
-  flags optimize=all_subs ;
+  flags optimize=all_subs ; coding=utf8;
 
   lin
 

lib/src/estonian/ExtraEst.gf

@@ -1,6 +1,6 @@
 concrete ExtraEst of ExtraEstAbs = CatEst ** 
   open ResEst, MorphoEst, Coordination, Prelude, NounEst, StructuralEst, (R = ParamX) in {
-
+  flags coding=utf8;
   lin
     GenNP np = {
       s,sp = \\_,_ => np.s ! NPCase Gen ;

lib/src/estonian/ExtraEstAbs.gf

@@ -1,3 +1,4 @@
+--# -coding=latin1
 abstract ExtraEstAbs = Extra [
   GenNP,
   VPI,ListVPI,BaseVPI,ConsVPI,MkVPI,ComplVPIVV,ConjVPI,