Initial Files for Rukiga RGL brough from previous coding before git tracking

src/rukiga/CompatibilityCgg.gf

@@ -0,0 +1,16 @@
+--# -path=.:../prelude:../abstract:../common
+
+concrete CompatibilityCgg of Compatibility = CatCgg **
+  open Prelude, ResCgg in {
+
+
+{-
+abstract Compatibility = Cat ** {
+
+fun
+    NumInt     : Int -> Num ;     -- 57
+    OrdInt     : Int -> Ord ;     -- 57
+
+-}
+
+}