restored mathematical in 1.4; forgave some lock fields in overload resolution

lib/resource-1.4/mathematical/MathematicalSpa.gf

@@ -0,0 +1,26 @@
+--# -path=.:present:prelude
+
+concrete MathematicalSpa of Mathematical = 
+  NounSpa - [ComplN2], --- to avoid ambiguity 
+--  VerbSpa, 
+  AdjectiveSpa,
+  AdverbSpa,
+  NumeralSpa,
+--  SentenceSpa,
+  QuestionSpa,
+  RelativeSpa,
+  ConjunctionSpa,
+  PhraseSpa,
+  TextSpa - [Tense,TPres,TPast,TFut,TCond],
+  IdiomSpa,
+  StructuralSpa,
+
+  SymbolSpa,
+  PredicationSpa, --  - [predV3,predV2], --- gf bug
+
+  LexiconSpa
+  ** {
+
+flags startcat = Phr ;
+
+} ;