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

lib/resource-1.4/mathematical/MathematicalGer.gf

@@ -0,0 +1,26 @@
+--# -path=.:present:prelude
+
+concrete MathematicalGer of Mathematical = 
+  NounGer - [ComplN2], --- to avoid ambiguity 
+--  VerbGer, 
+  AdjectiveGer,
+  AdverbGer,
+  NumeralGer,
+--  SentenceGer,
+  QuestionGer,
+  RelativeGer,
+  ConjunctionGer,
+  PhraseGer,
+  TextX - [Tense,TPres],
+  IdiomGer,
+  StructuralGer,
+
+  SymbolGer,
+  PredicationGer,
+
+  LexiconGer
+  ** {
+
+flags startcat = Phr ;
+
+} ;