lib/src: adding --# -coding=latin1 to 119 RGL modules

Adding coding pragmas
  
	--# -coding=latin1
  
so that grammars will continue to work when we change the default character
encoding to UTF-8.

lib/src/bulgarian/TextBul.gf

@@ -1,3 +1,4 @@
+--# -coding=cp1251
 concrete TextBul of Text = CatBul ** {
   flags coding=cp1251 ;