Add new __traits to the D grammar spec

Author: wilzbach

spec/grammar.dd

@@ -481,6 +481,7 @@ $(GNAME TraitsKeyword):
     $(TRAITS_LINK2 isFinalFunction)
     $(TRAITS_LINK2 isStaticFunction)
     $(TRAITS_LINK2 isOverrideFunction)
+    $(TRAITS_LINK2 isTemplate)
     $(TRAITS_LINK2 isRef)
     $(TRAITS_LINK2 isOut)
     $(TRAITS_LINK2 isLazy)
@@ -489,8 +490,11 @@ $(GNAME TraitsKeyword):
     $(TRAITS_LINK2 getAliasThis)
     $(TRAITS_LINK2 getAttributes)
     $(TRAITS_LINK2 getFunctionAttributes)
+    $(TRAITS_LINK2 getFunctionVariadicStyle)
+    $(TRAITS_LINK2 getLinkage)
     $(TRAITS_LINK2 getMember)
     $(TRAITS_LINK2 getOverloads)
+    $(TRAITS_LINK2 getParameterStorageClasses)
     $(TRAITS_LINK2 getPointerBitmap)
     $(TRAITS_LINK2 getProtection)
     $(TRAITS_LINK2 getVirtualFunctions)