Maltese: new reduced verb implementation, using binding for pronominal suffixes

Also include some syntax stuff adapted from Angelo Zammit's dissertation.
These sections in the code are marked with [AZ]

The old verbs implementation can still be found at this point in the GitHub repo:
7b3f4a049d

lib/src/maltese/SentenceMlt.gf

@@ -7,7 +7,6 @@
 --# -path=.:abstract:common:prelude
 
 concrete SentenceMlt of Sentence = CatMlt ** open
-  ResMlt,
   Prelude,
   ResMlt,
   ParamX,
@@ -15,6 +14,24 @@ concrete SentenceMlt of Sentence = CatMlt ** open
 
   flags optimize=all_subs ;
 
+  lin
+    -- NP -> VP -> Cl
+    -- John walks
+    PredVP np vp = {
+      s = \\tense,ant,pol => (s ++ v ++ o)
+        where {
+          s = case np.isPron of {
+            True => [] ; -- omit subject pronouns
+            False => np.s ! Nom
+            } ;
+          v = joinVParts (vp.s ! VPIndicat tense (toVAgr np.a) ! ant ! pol) ;
+          o = vp.s2 ! np.a ;
+          -- s = if_then_Str np.isPron [] (np.s ! Nom) ; -- omit subject pronouns
+          -- v = joinVParts (vp.s ! VPIndicat tense (toVAgr np.a) ! ant ! pol) ;
+          -- o = vp.s2 ! np.a ;
+        } ;
+      } ;
+
 -- Cl
 -- Imp
 -- QS