* api/gtk-symbols.xml : make GtkType a uint like GType.
* generator/CodeGenerator.cs : adopt new parser semantics
* generator/Parser.cs : move to single parser/multiple Parse. Remove
DoGenerate hack and let the CodeGenerator control this. Return
generatables instead of loading symboltable.
* generator/SymbolTable : add AddTypes method. Revamp dealiasing code.
svn path=/trunk/gtk-sharp/; revision=18570