Maltese RG: make pro-drop explicit. Other small fixes in Structural, Lexicon.

lib/src/maltese/ExtraMlt.gf

@@ -5,8 +5,23 @@
 -- Licensed under LGPL
 
 concrete ExtraMlt of ExtraMltAbs = CatMlt **
-  open ResMlt, ParadigmsMlt in {
+  open (R=ResMlt), ParadigmsMlt in {
 
   flags coding=utf8 ;
 
+  lin
+    SlashVa v = (R.predV v) ** { c2 = noCompl } ; -- See Verb.SlashV2a
+
+    -- VasV2 v = v ** { c2 = noCompl } ;
+
+    -- ProDrop : Pron -> Pron
+    -- unstressed subject pronoun becomes []: "(jiena) norqod"
+    ProDrop p = {
+      s = table {
+        R.Personal => [] ;
+        c => p.s ! c
+        } ;
+      a = p.a ;
+      } ;
+
 }